Answer: Given that:
Mass (m) = 20 g = 0.02 Kg,
temperature (T₁) = -10°C = -10+273 = 263 K
temperature (T₂) = 10°C = 10+273 = 283 K
Specific heat of water (Cp) = 4.187 KJ/Kg k
We know that Heat transfer (Q) = m. Cp.( T₂ - T₁)
= 0.02 × 4.187 × (283-263)
Q = 1.67 KJ
Heat transferred is 1.67 KJ
Explanation:
Given the role of protein in the body, what is a likely consequence of not getting enough protein in the body?
OPTIONS:
A.
It will be very easy to get sick.
B.
It will result in a lack of energy.
C.
It will negatively impact coordination.
D.
It will cause the body to create too much sugar.
PLEASE NO LINKS
Answer: It is b
Explanation:
The lack of protein in the body will result in a lack of energy in the body. Hence, option B is correct.
What is protein?Proteins are created from a variety of amino acid building blocks. Our body needs dietary protein to supply amino acids for the growth and upkeep of our cells and tissues. As we become older, our dietary needs for protein change.
Proteins are made up of many different amino acids that are joined together. Both plants and animals have a lot of these 20 different amino acid building blocks. Each protein has a unique ratio and arrangement of the 300 or more amino acids that make up a typical protein.
Our body is made up of thousands of different proteins, each of which has a specific function. They contribute to the structural components of our cells and tissues, along with the countless enzymes, hormones, and active proteins produced by immune cells.
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here’s a clearer picture :)
Explanation:
so your answer is 4 km/ day, which I have given in earlier answer,.
hope this helps you again.
A car accelerates from 5 m/s to 15 m/s in 5 s. What is its acceleration?
Answer:
2m/s squared
Explanation:
15-5=10m/s
10m/s divide by 5s
it gives 2m/s squared
The arrow is pointing to sodium’s
number of neutrons.
chemical symbol
atomic mass
combined number of electrons and protons.
Answer atomic mass
Explanation:
i took the test and got 100
What a Cell Wall can some tell me
Answer:
cell membrane
Explanation:
A cell wall is most commonly known as a cell membrane witch just controls what can go in and out of a cell .
( hope this helped )
The frequency of a sound in a 8 m long metal rod is 250 Hz. There are two complete sound waves in the rod. The speed of sound in this metal is
[tex]\\ \sf\longmapsto v=f\lambda[/tex]
[tex]\\ \sf\longmapsto v=250(8)[/tex]
[tex]\\ \sf\longmapsto v=2000m/s[/tex]
A ball is rolling across the floor at a constant speed. What will happen to the ball if it is exposed to an unbalanced force in the same direction that it is moving?
A. It will immediately stop.
B. Its speed will increase.
C. Its speed will decrease.
D. Its motion will be unchanged.
Answer:
B. it's speed will increase
the speed of an object increases by 30 m/s in 10 seconds. what is its acceleration?
Hope this helps you
sơ đồ tư duy môn địa 10 bài 12
nd ko ka balo mag anser sina ya doy
1 Apps OCPS
Tools
Weather
1
Directions: Select each correct answer. More than one answer may be correct.
Computer simulations are used to predict the weather. A computer simulation is a kind of model. Large amounts of data are entered
into the computer. Then the computer performs complicated calculations with the data. The result is a prediction about what the
weather might be like in the coming hours or days.
Why are computers widely used for modeling weather systems?
because weather systems are too complicated to be accurately predicted using small-scale
models
D
because weather systems are too large to study in controlled experiments
because weather systems are too complicated to be studied with instruments and satellites
because weather systems are too large to be observed in nature
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Computers are widely used for modeling weather systems because because weather systems are too complicated to be accurately predicted using small-scale. Hence option A is correct.
What is whether system ?Weather refers to the condition of the atmosphere and includes terms like how hot or cold, wet or dry, quiet or stormy, clear or foggy, etc. The troposphere, which is the lowest part of Earth's atmosphere and lies just below the stratosphere, is where most meteorological events take place. Climate is the phrase for the average of atmospheric conditions over longer periods of time, whereas weather is the term for day-to-day temperature, precipitation, and other atmospheric factors. Without more explanation, "weather" is typically taken to refer to the weather on Earth.
Differences in air pressure, temperature, and moisture from one location to another influence the weather. The Sun's angle at any given location, which changes with latitude, may be the cause of these variations.
Hence option A is correct.
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A penny is made of the element zinc plated with the element copper; a nickel is made of a mixture of the elements nickel and copper. Some isotopes of various elements are listed below by their atomic number and mass number. Use the periodic table on p. 131 to identify which atoms you would expect to find in the penny, which you would expect to find in the nickel, which you would expect to find in both, and which you would expect to find in neither coin.
Answer: We need the referenced table to discern which isotopes are likely to be found. But there is still an interesting piece of information.
Explanation:
An interesting story behind the US penny. It has been around since 1787 and consisted of primarily a copper, or copper-plated coin. In 1982 the design was changed, due to the high price of copper. A zinc core was copper plated to have the same appearance, but less expensive composition. If one of these pennies is slightly filed to expose the zinc, it can be placed in a strong acid that will react with and dissolve the zinc core. Fun, but a waste of money.
Answer:
in the penny Cooper(Cu),un the nickel nickel(Ni),in both Cooper(Cu)
Explanation:
You drive a car 660 m to the east, then 400 m to the north. What is the magnitude of your displacement? Using a sketch, estimate the direction of your displacement. Verify your estimate with a numerical calculation of the direction.
Explanation:
You walk 53m to the north, then you turn 60° to your right and walk another 45m. Determine the direction of your displacement vector. Express your answer as an angle relative to east.
Calculate the power of a car that uses 12KJ of chemical energy in 6 seconds
Explanation:
Power=work done/time
=> 12kJ/6s = 12000J/6s = 2000W = 2kW.
hope this helps you
A ship travels north at 15 km/h for 2 h. What is the ship's displacement in km?
The ship travels with a velocity of 15 km/h within 2 hours. The distance travelled is the velocity times the time taken that is 30 km to the north.
What is velocity ?Velocity is a physical quantity measuring the distance travelled by an object per unit time. Velocity is the rate of speed and it is a vector quantity having both magnitude and direction. The unit of velocity can be m/s, km/h, ft/s etc.
Velocity is the ratio of the change in distance to the change in time. The change in distance is sometimes called the displacement.
then velocity = displacement / time
Given that velocity = 15 km/h
time taken = 2 hours
then displacement = velocity × time
= 15 × 2 = 30 Km
Therefore, the displacement of the ship is 30 km to the north.
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What happens when you sit in a
chair?
A. Gravity is pulling you down but the chair
pushes you up with equal force.
B. Gravity is pulling you down and the chair
pushes you up into the air.
C. There is no force being exerted.
D. Gravity is pulling you down and the chair is
sliding sideways.
Answer:
B
Explanation:
that is the only way you can sit
Which term is defined as the amount of charge stored per volt?
A. capacitance
B. potential difference
C. potential energy
D. electric potential
inimbita ka ng iyong kamag aral na magpunta pagkatapos ng inyong klase sa isang video shop na malapit sa inyong paaralan ngunit nag bilin ang nanay mo na umuwi ka nang maaga dahil mayroon siyang ipagagawa sa iyo ano ang gagawin mo?
Answer:
sabihin sa kamag-aral na deh muna ako sasama kasi may papagawa pa nanay ko Sakin.
Explanation:
pa brainliest
which kind of energy transformation occurs in a gasoline-powered car?
F. Chemical energy is converted into mechanical energy.
G. Mechanical energy is converted into light energy.
H. Light energy is converted into sound energy.
J. sound energy is converted into chemical energy.
Answer:
Chemical energy is converted into mechanical energy
Explanation:
Chemical energy stored in the bonds of hydrocarbons is released as heat which drives the piston in a car to produce circular motion that propels the car.
In addition to time, which of the following must be used for a more complete description of the average acceleration of an object?
A. Mass
B. Displacement
C. Velocity
D. None of the above
A brick is dropped from a height of 31.9 meters
Explanation:
what is asked give brief explanation about question
A flare fired upward at 49 m/s will reach a height of
Answer:
122.5 meters
Explanation:
We have the third equation of motion:
[tex]\boxed{\mathsf{v^2=u^2+2aS}}[/tex]
v stands for the final velocityu, initial velocitya is the acceleration of the particle in motionS, the distance covered by the same particle.Here, the particle is a flare.
It's initial velocity is 49 m/ s and the final will be zero, that's 'cause the particle comes to a standstill upon reaching its maximum, in case of motion under gravity.
a will be the acceleration due to gravity = 9.8 m/ s²
So, here are the terms we've got for the third eqn. of motion:
v = 0 m/ su = 49m/ sa = - 9.8 m/ s (the force of gravity acts downwards, and that's the direction we say is negative)Now, the term we've got to find out is the height reached by the flare, i. e., S.
=> v² = u² + 2aS
=> (0)² = (49)² + 2×(-9.8)×S
=> 0 = 49×49 - 2×9.8×S
=> 2×9.8×S = 49×49
[tex]\implies \mathsf{S=\frac{49\times 49}{2\times9.8} }[/tex]
=> S = [tex]\frac{245}{2}[/tex]
=> S = 122.5 metersAnd, S is the maximum height the flare covers, so the answer is 122. 5 meters
7. A gold bar has a volume of 4.7 cm3 and a density of 19.3 g/cm3. What is its mass? Be sure to show your work and label all units
Answer:
90.71
Explanation: Just multiply V/D=Mass
farmer joe drives a tractor for 4 hours. his tractor is pulling a heavy plow across a rocky field. over the course of 4 hours, is the plow gaining or losing energy?
Over the course of the 4 hours for which farmer Joe's tractor is pulling the heavy plow, the plow is gaining energy by virtue of its displacement --termed the Kinetic energy.
According to the question, Farmer Joe drives the tractor for 4 hours.
However, the tractor is connected to a heavy plow and is used to pull the plow across a rocky field.
The question requires that we determine if the plow is gaining or losing energy.
In the plow's state of rest, prior to when it is connected to the tractor and pulled by the tractor; the plow possess a form of energy by virtue of its position termed the Potential energy.However, the focus of the question is during the pulling action of the tractor on the plow.
As such, the plow now has a kinetic energy by virtue of its displacement..Ultimately, the plow is gaining energy as it is being pulled by the tractor and now has Kinetic energy.
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who is the target group of referred to or described in the text about gabu?
a cart is constrained to move along a straight line. a varying net force along the direction of motion is exerted on the cart. the cart’s velocity v as a function of time t is shown in the graph above. the five labeled points divide the graph into four sections. for which segment does the cart move the greatest distance?
From the graph, the segments that move the greatest distance are AB and DE.
We have,
From the graph,
The y-axis is the speed.
The x-axis is the time.
This means,
Speed = Distance / Time
So,
The horizontal line is the distance.
Now,
There are 5 points: A, B, C, D, and E.
There are four parts:
AB, BC, CD, and DE.
On the graph.
So,
I part = 1/3 = 0.33
The distance covered in each part is:
AB = 2 parts = 2 x 0.33 = 0.66
BC = 1 part = 0.33
CD = 1 part = 0.33
DE = 2 parts = 2 x 0.33 = 0.66
Thus,
The segments that move the greatest distance are AB and DE.
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7. Circle the letter of the sentences that describe Thomson's model of the
atom.
a. An atom is filled with positive matter.
b. An atom is mostly space with a small nucleus.
c. Negative charges are scattered throughout an atom.
Answer: c
Explanation:
Two astronauts are playing catch in a zero gravitational field. Astronaut 1 of mass m1 is initially moving to the right with speed v1 . Astronaut 2 of mass m2 is initially moving to the right with speed v2>v1 . Astronaut 1 throws a ball of mass m with speed u relative to herself in a direction opposite to her motion. Astronaut 2 catches the ball. The final speed of astronaut 1 is vf,1 and the final speed of astronaut 2 is vf,2 .What is the speed vf,1 of astronaut 1 after throwing the ball?
The final velocity ([tex]v_1_f[/tex]) of the first astronaut will be greater than the final velocity of the second astronaut ([tex]v_2_f[/tex]) to ensure that the total initial momentum of both astronauts is equal to the total final momentum of both astronauts after throwing the ball.
The given parameters;
Mass of the first astronaut, = m₁Mass of the second astronaut, = m₂Initial velocity of the first astronaut, = v₁Initial velocity of the second astronaut, = v₂ > v₁Mass of the ball, = mSpeed of the ball, = uFinal velocity of the first astronaut, = [tex]v_f_1[/tex]Final velocity of the second astronaut, = [tex]v_f_2[/tex]The final velocity of the first astronaut relative to the second astronaut after throwing the ball is determined by applying the principle of conservation of linear momentum.
[tex]m_1v_1 + m_2v_2 = m_2v_2_f + m_1v_1_f[/tex]
if v₂ > v₁, then [tex]v_1_f > v_2_f[/tex], to conserve the linear momentum.
Thus, the final velocity ([tex]v_1_f[/tex]) of the first astronaut will be greater than the final velocity of the second astronaut ([tex]v_2_f[/tex]) to ensure that the total initial momentum of both astronauts is equal to the total final momentum of both astronauts after throwing the ball.
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the jovian planets are thought to have formed as gravity drew hydrogen and helium gas around planetesimals made of __________.
Made of rocks,metal and ice.
You push a friends sitting on a swing. If you push with 200N of force and your friend accelerates at a rate of 4 m/s^2. Find the mass of your friend.
e friend sitting on the swing = 50 kg
Rate of acceleration = 4 m/s^2
The above information's are already given in the question. We need to utilize these information's in such a manner that the answer to the question can be determined easily.
We already know that
Force = Mass * acceleration.
This formula has to be used to find the force exerted.
Then
Force exerted = Mass of the friend * Acceleration
= (50 * 4) kg m/s^2
= 200 Newton
So the force exerted by me is 200 Newton. I hope the explanation and the procedure is clear to you and you are satisfied with it.
V1=2 L
T1= ? degrees Kelvin
V2= 4 L
T2= 300 degrees Kelvin
Explanation:
using Charles law
V1/T1 = V2/T2
2/ T1 = 4/300
cross multiply
4 X T1 = 2 X 300
T1 = 600/4 = 150
T1 = 150°k