An experiment was performed to determine how the amount of coffee grounds could affect the taste of coffee. The same amount and type of water, the same perking time, and the same electrical sources were used. What is a constant?

Answers

Answer 1

A constant in the experiment performed to determine how the amount of coffee grounds could affect the taste of coffee is amount of water.

What is constant in an experiment?

Experiment is a test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy or likelihood of something previously untried.

An experiment is conducted using variables such as;

Independent variableDependent variableControlled variable or constant

A controlled variable or constant is a factor that is kept constant in a series of experiments in which other factors are varied.

According to this question, in an experiment that was performed to determine how the amount of coffee grounds could affect the taste of coffee, the same amount and type of water, the same perking time, and the same electrical sources were used.

This suggests that the amount of water is a constant in this experiment.

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Related Questions

2. A freight train traveling with a velocity of −4.0 m/s begins backing into a train yard. If the train’s average acceleration is −0.25 m/s2, what is the train’s velocity after 14s?

Answers

According to the given statement is the train’s velocity after 14s is -7.5 m/s.

What is defined as velocity?

The path of a body or entity's movement is determined by its velocity. In its basic form, velocity is a scalar quantity. In definition, velocity is a vector quantity. It is the speed where at ’s dimensional. It is the migration change rate.

Briefing:

Initial velocity of the train, u = -4.0 m/s

Acceleration of the train, a = -0.25 m/s²

Time of motion of the train, t = 14 s

The following formula is used to determine the train's final speed:

v = u + at

v is the final velocity of the train

v = -4.0 + (-0.25 x 14)

v = -4.0 - 3.5

v = -7.5 m/s

Therefore, the train velocity of the train is -7.5 m/s.

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A llama runs until reaching its top speed. A graph of the llama's velocity over time is shown
below.
What is the llama's average acceleration from 15 to 20 seconds?

Answers

The average acceleration for that time interval will be zero because the velocity is constant.

What is acceleration?

If an object's velocity changes, it is said to have been accelerated. An object's velocity can alter depending on whether it moves faster or slower or in a different direction. A falling apple, the moon orbiting the earth, and a car stopped at a stop sign are a few instances of acceleration. Through these illustrations, we can see that acceleration happens whenever a moving object changes its direction or speed, or both.

What is velocity?

Velocity and speed describe how quickly or slowly an object is moving. We frequently encounter circumstances when we must determine which of two or more moving objects is going faster. If the two are travelling on the same route in the same direction, it is simple to determine which is quicker. It is challenging to identify who is moving the fastest when their motion is in the other direction. The concept of velocity is useful in these circumstances. Learn about the definition of velocity in this article as well as the distinction between speed and velocity.

the velocity is constant at -20 m/s. Hence the average acceleration for that time interval will be zero because the velocity is constant.

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Answer:

0

Explanation:

i did it on khan academy

Help please and thank you

Answers

Based on the data in the chart, it can be concluded that as mass increases, so does thermal energy, because the thermal energy of a substance is highly dependent on its temperature and mass.

What is Thermal energy?

Thermal energy always moves from a higher temperature area to a lower temperature area. When a block of ice comes into contact with a colder substance, such as liquid nitrogen or dry ice, thermal energy moves from the ice to the colder substance.

Because mass measures the amount of material in a sample, thermal energy is determined by the mass and temperature of the object. The more significant the mass of the object, the more particles there are in the model, and the more significant the thermal energy.

Thermal energy is the energy contained in the motion and vibration of its molecules.

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in the video, forces acting on the car that are parallel to the direction of motion are analyzed. how are these forces related?in the video, forces acting on the car that are parallel to the direction of motion are analyzed. how are these forces related?

Answers

The forces have a same magnitude, act in opposing directions, and result in a net force of zero. The forces produce a net force in the direction of motion that is in the same direction, but they are not equal in size.

All forces operating on an automobile travelling uniformly at a steady speed are balanced. In this instance, the two opposing forces air resistance and friction perfectly balance the force that the wheels are exerting on the ground. However, the instant your foot leaves the gas pedal, there is no longer an applied force, and the forces are out of balance: Now when the car is out of balance, the forces pushing backward on it cause it to slow down; this is known as negative acceleration.

Because there wasn't enough upward force (i.e., regular force from the chair) to balance the extra mass, you would speed downward as a result of the unbalanced force, possibly breaking your tailbone as you plunged through the chair to the floor.

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a wire with diameter 2.0 mm and length of 10 m is made of an unknown material. the wire has a resistance of 4.2 ohm. calculate the resistance of a wire with a 1.6 mm diameter and 20 m length made of the same material

Answers

The resistance of a wire with a 1.6 mm diameter and 20 m length made of the same material is 3.14×10⁻⁷Ω−m.

What does "resistance" mean?

Electrical resistance of a conductor with a unit cross-sectional area and unit length is called resistivity. Resistivity is a distinctive attribute of any material that may be used to compare different materials based on how well they conduct electric currents. Low conductivity is indicated by high resistance.

Given,

l= 10m= 1000mm

d= 2mm

∴radius(r)= 20.2 =0.1mm

R=10Ω

To find,

Resistivity(ρ)

ρ=R /l A

​where,

R= Resistance

l= Length of wire

A= Cross sectional area of wire

Cross sectional area of cylinder (A)=Πr²

A= π×(0.1)²

A=0.0314mm²

ρ=10(10000.0341)

ρ=0.000314Ω−mm

ρ≃3.14×10⁻⁷Ω−m

So, the resistivity of the material is equal to 3.14×10⁻⁷Ω−m.

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you walk for 6.44 km with at a constant velocity of 2.60 m/s due west, turn around, and then walk with an average velocity of 0.465 m/s due east. from your starting point to your destination, your overall average velocity is 1.37 m/s due west. during the trip, how far east did you walk?

Answers

The distance travelled due east during the trip is 875.831 meters.

The distance due west is 6.44 km (6440m) and the velocity due west is 2.6m/s. The velocity due east is 0.465m/s.

We know,

Average velocity = Total displacement/Total time

It is given that, the total average velocity is 0.465m/s.

If distance in west is W and the distance in east is E, then the displacement D is,

D = √((6440)²+(E)²)

The time T₁ in west,

T₁ = 6440/2.6 seconds

Time time T₂ in east,

T₂ = E/0.465

The total time T is,

T = T₁ + T₂

T = 6440/2.6 + E/0.465

So, putting all the values now,

Average velocity = D/T

1.37 = √((6440)²+(E)²)/(6440/2.6 + E/0.465)

On solving it further,

We get,

E = 875.831 meters.

So, the distance in east is 875.831 meters.

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which of the following statements is correct: a. venturi meter is a common device for quantifying flow rate q based on differences in pressure. b. hot-wire anemometers measure fluid velocity based on effectiveness of heat transfer away from a heated wire. c. rotameters use drag on a floating object in equilibrium with its weight and buoyancy to indicate volume flow rate by position of the float. d. all of the above statements are correct.

Answers

Option D is correct. In venturi meter a converging section of a pipe is used to increase the flow velocity and corresponding pressure drop, from which the fluid flow rate is calculated using Bernoulli's equation.

A venturimeter is a flow measurement device. The meter is connected between two sections of the pipe; the cross-sectional area A of the meter's entrance and exit corresponds to the cross-sectional area of the pipe. The fluid flows from the pipe with speed V between the entrance and exit, and then through a narrow throat with cross-sectional area a with speed v. A venturi works by measuring the difference in pressure between two points. The pressure difference is created by narrowing the pipe, causing the fluid to flow faster. In the larger section of the venturi, the fast moving fluid has a lower pressure than the slower fluid.

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a long ladder 20 feet long is leaning against a wall with one end on the floor. the bottom end of the the ladder is being pulled along the floor away from the wall at a constant rate of 1 2 feet/sec. assume that the top of the ladder is always in contact with the wall. what are the velocity and acceleration of the top of the ladder when the bottom of the ladder is 12 feet from the wall?

Answers

When a ladder with 20 ft. long is pulled along the floor away with a constant rate 1.2 ft/s, then the top of the ladder is moving toward the floor with velocity - 0.9 ft/s and there is no acceleration.

Let:

x = the distance between the bottom of the ladder from the wall

y =  the distance between the top of the ladder from the floor

When x = 12 ft, then using the Pythagorean Theorem:

x² + y² = 20²    (Equation 1)

12² + y² = 20²

y² = 20² - 12² = 16²

y = 16 ft.

Take the derivative of equation 1 with respect to t

2x . dx/dt + 2y. dy/dt = 0

Substitute x = 12, y = 16, dx/dt = 1.2 ft/s

2 . 12 . (1.2) + 2 . 16 . dy/dt = 0

dy/dt = - 0.9 ft/s

Hence, the velocity is - 0.9 ft/s

Since the floor is moving with a constant rate, the acceleration is zero.

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A substance added to gasoline is found in the wells of people who live miles from a gas station. Is this an example of a point source of pollution or a nonpoint source of pollution? Explain.
I need to get it done right now

Answers

The substance added to gasoline and found in the wells of people who live miles from a gas station is an example of non-point source of pollution.

What are point source pollution?

Point source pollution are sources of pollution, radiation, waves, fluid or other substance that has one specific location.

On the other hand, non-point source pollution is a combination of pollutants from a large area rather than from specific identifiable sources such as discharge pipes.

According to this question, a substance added to gasoline is found in the wells of people who live miles from a gas station. This suggests that the pollutants enter from a wide array of sources.

Therefore, it can be said that the source of pollution is a non-point source.

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A glass of ice at 0°C, has partially melted to form a mixture of ice and ice water. How has the thermal energy changed between these two stages?

Answers

In between the two processes, we can see that the thermal energy of the mixture increases.

What is thermal energy?

Recall that energy is the ability to do work. Now when we add the  partially melted to form a mixture of ice and ice water, we are going to increase the thermal energy of the water. This is because the water in the liquid state has a greater energy than water in the solid state.

Having see that liquid water contains more energetic particles than the the solid water, the thermal energy has increased in between the two processes.

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three different-mass projectiles are launched at different angles of elevation from the top of a building. each particle has the same initial kinetic energy. which particle has the greatest kinetic energy just as it impacts with the ground?

Answers

The correct option is b. The one with the lowest mass.

An object's kinetic energy is determined by

k=1/2mv^2

where

m is the object's mass.

v is the object's speed.

The three missiles in this puzzle have varying masses but the same beginning kinetic energy.

The three projectiles will all have the same kinetic energy when they hit the ground because mechanical energy is conserved, assuming there is no air resistance (because the potential energy that they have lost is the same, since they have been launched from the same height, and they reach the same final altitude, the ground).

hence,

K1=k2=k3

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Does anyone have an answer for this? I need it before 1:22pm (CDT)

As a scientist, you are studying the physical properties of various substances. In your line of work, how will you effectively use physical properties to identify each substance?

Answers

Answer:

I would use physical properties to identify each substance because anything with the same physical properties as previous substances in the past.

Explanation:

pls mark brainliest with the crown. I need more to level-up

a cherry pie in a 8.50 in diameter plate is placed upon a rotating tray. then, the tray is rotated such that the rim of the pie plate moves through a distance of 308 in. express the angular distance that the pie plate has moved through in revolutions, radians, and degrees.

Answers

The angular distance should be

In revolution, θ = 11.53 revolution.

In radian = θ = 72.40 rad.

In degree θ = 4150.8°.

Calculation of the angular distance:

Since

Pie diameter = 8.50 in

So,  the circumference of the pie should be

P = πd = 8.50π in

And, rim of the pie rotates 308 in,

So,

1 Revolution of the pie is 8.50π in,

So, for 308 it should be

= 308 in / 8.50π in revolution

=11.53 revolution

Now in the case when when we have to find distance in radians:

1 revolution is 2πrad

So,

11.53 revolution = 11.53 × 2π = 72.40 rad.

And also, 1 revolution is 360°

So,

11.53 revolution = 11.53 × 360 = 4150.8°

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Pushing or pulling an object that is not already moving can make that object start to move?
TRUE
OR
FALSE ?

Answers

According to the research, the correct option is true. The statement "Pushing or pulling an object that is not already moving can make that object start to move" is true.

What is motion?

It is about the change of position starting from a reference system from which it is observed that an object experiences.

In this sense, it is related to the displacement of a body and is produced by an imbalance between the forces that act on it, that is, the application of a force modifies the state of rest or the direction of movement.

Therefore, we can conclude that motion is the state of bodies when they change position caused by an effect acting on the bodies called force.

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A student learns that a certain comet in the solar system is considered a short-period comet. Based on this knowledge, what is the student most justified in concluding?.

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A student learns that a certain comet in the solar system is considered a short-period comet. Based on this knowledge, the student most justified in concluding The comet originates between the Sun and the asteroid belt.

The Solar System's asteroid belt is a torus-shaped area roughly midway between the orbits of Jupiter and Mars. Asteroids or minor planets are the names for the vast majority of solid, irregularly shaped entities that are far smaller than planets. The term "primary asteroid belt" also applies to this asteroid belt.

A comet is a tiny, frozen object in the Solar System that begins to outgas when it approaches the Sun. Outgassing is the process through which gases are released from the comet.

The orbital durations of comets differ widely, from a few years to possibly millions of years, and they often have very eccentric elliptical orbits. The Kuiper belt or its related scattered disc is the source of short-period comets.

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a four-wheeled tractor whose operating weight is 47,877 lb is pulled up a road whose slipe is 3.5% at a unifrom speed. if the average tension in the towing cable is 4,860 lb, what is the rolling resistance of the road?

Answers

The rolling resistance of the road is 203.02lb per ton

R=P/W where W=47877lb/(2000lb/ton)=23.985 ton

R=4860lb/23.985ton

R=203.02lb per ton.

Rolling resistance, occasionally known as rolling friction or rolling drag, is the pressure resisting the movement when a frame rolls on a surface. Its miles are mainly caused by non-elastic consequences; that is, no longer all of the energy needed for deformation of the wheel, roadbed, and so on., is recovered when the stress is removed.

Tire rolling resistance is the power that your vehicle needs to send to your tires to hold movement at a steady velocity over a surface. In other words, it is the effort required to maintain a tire rolling. the principal contributor to rolling resistance is the process known as hysteresis.

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14. suppose there is a 10 mbps microwave link between a geostationary satellite and its base station on earth. every minute the satellite takes a digital photo and sends it to the base station. assume a propagation speed of 2.4 x 108 m/s and the distance between satellite and station is 3.6 x 107 m. what is the propagation delay of the link?

Answers

The propagation delay of the link due to time dilatationis 1.152 x 10¹⁶ s.

We need to know about the time dilatation to solve this problem. Time dilatation represents that time is relative between the moving and static objects.  From a static objects point of view, the time should be

t' = t / √(1 - v²/c²)

where t' is the interval time based on the static object, t is the interval time based on the moving object, v is velocity and c is the speed of light (3 x 10⁸ m/s),

From the question above, the given parameters are

v = 2.4 x 10⁸ m/s

D = 3.6 x 10⁷ m

Find the time taken based on moving objects

t = 2D . v

t = 2 . 3.6 x 10⁷ . 2.4 x 10⁸

t = 1.728 x 10¹⁶ s

Find the time interval based on static objects

t' = t / √(1 - v²/c²)

t' = 1.728 x 10¹⁶ / √(1 - (2.4 x 10⁸)²/(3 x 10⁸)²)

t' = 2.88 x 10¹⁶ s

Hence, the delay time is

Δt = t' - t

Δt = 2.88 x 10¹⁶ - 1.728 x 10¹⁶

Δt = 1.152 x 10¹⁶ s

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the temperature of the earth is determined by the amount of solar radiation received, the amount of solar energy reflected, and the amount of heat retained by the what?

Answers

The temperature of the Earth is determined by the amount of solar radiation received, the amount of solar energy reflected, and the amount of heat retained by the atmosphere.

What is temperature?
The physical concept of temperature expresses in numerical form how hot or cold something is. A thermometer is used to determine temperature. Thermometers are calibrated using a variety of temperature scales, which historically defined various reference points as well as thermometric substances. The most popular scales are the Celsius scale, also known as centigrade, with the unit symbol °C, the Fahrenheit scale (°F), as well as the Kelvin scale (K), with the latter being primarily used for scientific purposes. One of the International System of Units' seven base units is the Kelvin (SI).

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If you had access to a personal DNA machine, what would you analyze and why?

Answers

If I had access to a personal DNA machine, I would analyze my ancestry and my health condition.

Just for curiosity you can compare your DNA to your parents DNA to find whose trait you received the most. Through DNA testing one can find where their ancestors lived and which group of people they interacted with.

In terms of analyzing DNA for health condition one can identify if they have any genetic diseases and it can also be used to identify cancer in its early stages so that it can be cured. It can also be used to identify the diseases an unborn fetus might inherit.

Therefore, if I had access to a personal DNA machine, I would analyze my ancestry and my health condition.

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a satellite used in a cellular telephone network has a mass of 2440 kg and is in a circular orbit at a height of 660 km above the surface of the earth. part a what is the gravitational force fgrav on the satellite? take the gravitational constant to be g

Answers

Gravitational constant to be G = 6.67×10−11 N⋅m2/kg2 , the mass of the earth to be me = 5.97×1024 kg , and the radius of the Earth to be re = 6.38×106 m then Gravitational force Fgrav on the satellite is 19383.7 N

Given value for constant Gravitational G = 6.67 x 10-11 N.m²/kg²

Earth mass is M = 5.97 x 1024

Mass of the satellite  m = 2440

Earth's radius  RE = 6.38 x 106 m

Height of the satellite from the surface of the Earth = H = 700 km = 700 x 103 m = 0.7 x 106 m

Radius of the satellite = R

R = RE + H

R = 6.38x106 + 0.7x106

R = 7.08 x 106 m

Gravitational force of Earth on the satellite = Fg

F, GMm R2

F,= (6.67 * 10-11)(5.97* 104) (2440) (7.08 * 106)2

Fg = 19383.7 N

Free-fall acceleration at the surface of the Earth = g = 9.8 m/s2

Weight of the satellite at the surface of the Earth = W

W = mg

W = (2440)(9.8)

W = 23912 N

Ratio of the gravitational force on the satellite to it's weight on the surface = P

P = Fg/W

p= 19383/23912

P = 0.8106

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What will be the next step in our sun's life cycle?A. white dwarf B. red giantC. supernovaD. black hole

Answers

ANSWER:

B. red giant

STEP-BY-STEP EXPLANATION:

The Sun is currently a main sequence star and will remain so for another 5 billion years. It will then expand and cool down to become a red giant, after which it will contract and heat up again to become a white dwarf.

Therefore, the correct answer is: B. red giant

Select the correct answer. when a small star dies, which of these celestial objects is it most likely to help create? a. a planet b. a star c. a moon d. a meteor e. a comet

Answers

It is best to choose option B. When a star runs out of fuel, it can no longer undergo the merger process and dies. The primary elements of stars are helium and hydrogen.

A white dwarf star's maximum mass is determined by Chandrasekhar's limit, a sort of maximum restricted value. The Chandrasekhar limit is often valued at 1.44 times the mass of the sun, or around 2.765 1030 kg, on a global scale.

In other words, the Chandrasekhar limit is the highest figure that may possibly reach 1.44 times the mass of the sun.

When a high-mass star runs out of gas to burn, it enlarges and changes into a red supergiant. While the bulk of stars gradually fade away, the supergiant stars, often known as supernovae, demolish themselves in a massive explosion. New stars can develop as a result of massive stellar deaths.

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During which time interval was the motion fastest? responses 1 h to 2 h 1 h to 2 h 2 h to 3 h 2 h to 3 h 3 h to 4 h 3 h to 4 h 4 h to 5 h

Answers

Answer: 1h

Explanation:

a person throws a ball at an angle of 30 o with the horizontal with a velocity of 32 m/s. as the ball is thrown, a second person is running past the thrower at a constant velocity. at what velocity must this second person run so that she may catch the ball as it hits the ground?

Answers

If the second player moved horizontally, the speed he must maintain to catch the ball is 27.67 m/s.

What is the range of the projectile (ball)?

The range of the projectile is the maximum horizontal distance travelled by the ball.

R = (u²sin(2θ)) / (g)

where;

u is the initial velocityθ is the angle of projectiong is acceleration due to gravity

R = (32² x sin(2 x 30) ) / (9.8)

R = 90.49 m

The time of motion of the ball is calculated as follows;

R = uₓt

where;

uₓ is the horizontal component of the velocity

R = ucosθ(t)

t = R/ucosθ

t = (90.49) / (32 cos30)

t = 3.27 seconds

If the second player moved horizontally, the speed he must maintain to catch the ball is calculated as;

R = Ut

U = R/t

U = (90.49) / (3.27)

U = 27.67 m/s

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Can someone help me pls, i also have 3 more questions like this :D

Answers

The water molecules in the gas phase have more kinetic energy than in the liquid phase. The molecules in the liquid phase must absorb energy from the surroundings to enter the gas phase.

What is a hot spring?

A hot spring can be defined as a natural or an artificially-induced phenomena in which very hot groundwater flows out from the Earth's crust due to the heat energy that is present in the geosphere.  

What is a phase change?

A phase change simply refers to the change in the state (phase) of matter of a given chemical compound or substance in the following ways:

Gas to solidSolid to liquidLiquid to gasLiquid to solid

Generally speaking, the water molecules in the gas phase typically possesses more kinetic energy than in the liquid phase and as such, it would have to absorb more energy from the surroundings in order to enter the gas phase.

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how do the kinetic energy of each of the following objects compare to one another? i. object of mass 3 kg traveling at constant velocity of 4 m/s in the x x direction ii. object of mass 1 kg traveling at constant velocity of 8 m/s in the x x direction iii. object of mass 3 kg traveling at constant velocity of 3 m/s in the x x direction and -3 m/s in the y y direction

Answers

The kinetic energy of each of the following objects compare to one another as: II > I > III

As we know the kinetic energy is follows as:

K.E. = 1/2m[tex]v^{2}[/tex]

(i) Object 1

mass = 3kg

velocity = 4m/s

K.E. = 1/2m[tex]v^{2}[/tex]

K.E. = 1/2×3×4×4

K.E. = 24J

(ii) Object 2

mass = 1kg

velocity = 8m/s

K.E. = 1/2m[tex]v^{2}[/tex]

K.E. = 1/2×1×8×8

K.E. = 32J

(iii) Object 3

mass = 3kg

velocity = -3m/s

K.E. = 1/2m[tex]v^{2}[/tex]

K.E. = 1/2×3×(-3)×(-3)

K.E. = 13.5J

Therefore, the kinetic energy of each of the following objects compare to one another as: II > I > III

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The speed of sound in a particular gas is 675 m/s. A sound wave propagating in this material has a wavelength offifteen meters. What is the frequency of this sound?knowns and unknownsolveright answer

Answers

Given, Speed of the sound, v=675 m/s

The wavelength of the wave, λ=15 m

Relation between speed, wavelength, and frequency of a wave is given by

[tex]v=f\lambda[/tex]

Where f is the frequency of the sound.

On substituting the known values,

[tex]675=f\times15[/tex]

Which gives us,

[tex]f=\frac{675}{15}=45\text{ Hz}[/tex]

Therefore the frequency of the sound in the given medium is 45 Hz.

which is the best definition of pitch

Answers

Answer:

a black or dark viscous substance obtained as a residue in the distillation of organic materials and especially tars

Explanation:

To prevent water pollution, a factory proposes pumping its wastes into the ground instead of into a river. Would you support this proposal? Why or why not?

Answers

No! Waste must have proper disposal. Doing that will just pollute the ground.

if i were to drop an egg off a cliff, it begins to acceleration toward the ground, until it hits the ground and splattered. is momentum conserved in this situation?

Answers

Based on the principle of momentum, the momentum of the egg falling from a cliff and which shatters on hitting the ground is conserved.

What is momentum?

Momentum is the product of the mass and the velocity of a compound.

Momentum, p = mass * velocity

Momentum is a vector quantity and its unit is kgm/s.

According to the principle of the conservation of momentum, in a system of colliding bodies, the momentum before the collision and the momentum after collision is conserved or equal.

Therefore, the momentum of the egg in the given scenario is conserved.

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The baker has 305 cakes to send to the farmers market. If he can pack up to 20cakes in a crate for shipping, what is the minimum number of boxes required toship all of the cakes. Explain your reasoning. A cat wakes up in its bed and visits its food dish to the left of its bed. Positions to the right of its bed are assigned a negative value and positions to the left of its bed are assigned a positive value. Where did the cat begin and end its journey?Time (m) 1, 2, 3, 4, 5Position (m) 0, 2, 4, -5, -10O The cat began its journey at its food dish and ended its journey 10 meters to the right of its bed. O The cat began its journey in bed and ended its journey 5 meters to the left of its bed.O The cat began its journey at its food dish and ended its journey 10 meters to the left of its bed.O The cat began its journey in bed and ended its journey 10 meters to the right of its bed.**** Which of the following is not a condition necessary to create a valid probability distribution? How is chemical weathering different from physical weathering?(30 points)Chemical weathering forms new substances, while physical weathering does not.Chemical weathering involves plants and animals, while physical weathering does not.Chemical weathering requires a reaction with water, while physical weathering does not.Chemical weathering results in the breakdown of rock, while physical weathering does not. Which statement best describes a situation in which scientists would have confidence in a scientific theory? the difference of twice h and 5 is as much as the sum of h and 4 I need help with this practice problem solving *I will send another picture of my question Parts of a neuron include: A. dendrites.B. hormones.C. cortexes.D. collosums. What is the solution to the equation below? Round your answer to two decimal places.ex = 5.9A.x = 124.50B.x = 1.77C.x = 365.04D.x = 0.77 A wave traveling on a Slinky that is stretched to 4 m takes 4.97 s to travel the length of the Slinky and back again.(a) What is the speed (in m/s) of the wave? m/s with fraudulent misrepresentation, the party knows that the misrepresentation is false, yet still makes the representation to another party. this indicates that the party making the misrepresentation has: blank . what are the major required aspects in a problem in order to apply dynamic programming technique? group of answer choices base case to stop recurrence optimal substructure and overlapping subproblems be able to solve using top down and bottom up approach whether a problem can be divided or not Please Help! Based on what you learned about the effects of the French and Indian War and the response from England, what predictions can you make about the future relationship between England and the 13 colonies?Answer in 3-5 Sentences. Amanda is sending away hair samples to be tested for DNA. What is the BEST sample she can send to the lab for testing? A. hair from the telogen stage B. hair that has naturally shed C. hair with exposed follicular tissue D. hair that has been dyed (30 points) Solve for the missing side of the triangle. Round to the hundredths place if needed. Using the rotation R, can you create a function R(ABCD) that is equivalent to the reflection of ABCD across both the x-axis and y-axis? What types of things did Christian holidays celebrate? With low wages and strict controls on speed and productivity, how do barbadian pink-collar workers in the informatics industry express their agency?. If the cost of a car is $6,345.00, and the tax rate is 6%, how much is the total cost of the car? Hi, can you help me to solve this problem, please!!