1 in every 2500 individuals would expect the hair color to be present in humans
At a specific genomic region, an allele is one of two or more variations of the DNA sequence (a single base or a segment of nucleotides). For each genomic region with such variation, an individual inherits two alleles, one from each parent. The person is homozygous for the allele if the two alleles are the same. The person is heterozygous if the alleles are distinct from one another. The term "allele" is used to refer to a gene's alternate form or variants. For each autosomal gene, one allele is inherited from each parent, and we often group the alleles into categories. Usually, we refer to them as normal, wild-type, aberrant, or mutant alleles.
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the greatest magnification on the compound light microscope can be achieved by using the high power objective lens.
The statement is false, that the greatest magnification on the compound light microscope can be achieved by the use of the high-power objective lens.
What is a Compound Light microscope?A microscope with numerous lenses and its own light source is referred to as a compound light microscope. In this type of microscope, the rotating nosepiece is positioned closer to the specimen and contains the objective lenses, while the binocular eyepieces house the ocular lenses.
The compound binocular microscope is now more often utilized, even though it can occasionally be found as monocular with only one ocular lens.
Zacharias Jansen's 1595 invention of the compound microscope with collapsible tubes and a 9X magnification produced the first light microscope.
Since then, microscopes have advanced significantly; the strongest compound microscopes available today have magnifications of 1,000 to 2,000X.
Hence, the statement is false that it can be achieved by using the high power objective lens.
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A pig on roller skates is moving with an initial velocity of -10 m/s and is accelerating at a rate of 2m/s/s, therefore the pig is __________during the next 2 seconds.
A. moving faster in the positive direction
B. moving slower in the positive direction
C. moving slower in the in the negative direction
D. moving faster in the negative direction
The pig is moving slower in the negative direction during the next 2 seconds.
What is acceleration?The term acceleration refers to the change in the velocity of the object with time. Now we know that velocity is a vector quantity. This implies that we have to take the magnitude and the direction into focus when we are discussing about the velocity.
Similarly, the acceleration is a vector quantity and the magnitude and the direction must also be taken into account when dealing with the acceleration.
In this case, it is clear that a pig on roller skates is moving with an initial velocity of -10 m/s and is accelerating at a rate of 2m/s/s.
Seeing that the velocity is negative, we can see that the pig roller coaster is moving the negative direction. Recall that the axes must be defined such that one is negative and one is positive.
Having said that, we can conclude that; the pig is moving slower in the negative direction during the next 2 seconds.
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If the final pressure is 0.500 times the initial pressure, what is the ratio of the final density to the initial density?
By ideal gas approximation, the final to initial density ratio is 1/2.
We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation
P . V = n . R . T
where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.
From the question above, we know that
P2 = 0.5 P1
Pressure is inversely proportional to pressure, hence it can be written as
P ~ (1/V)
Assuming the temperature does not change, the ratio of pressure is
P1 / P2 = (1/V1) / (1/V2)
P1 / P2 = V2 / V1
P1 / 0.5P1 = V2 / V1
V2 = 2 V1
Find the density ratio
ρ2 / ρ1 = (m/V2) / (m/V1)
ρ2 / ρ1 = V1 / V2
ρ2 / ρ1 = V1 / 2V1
ρ2 / ρ1 = 1 / 2
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If a system has 71.0 j of heat added to it, and the system does 25.0 j of work on its surroundings, what is the change in the internal energy of the system, in j?
The change in the internal energy of the system is 96 j.
What is internal energy ?The change in the internal energy of the system is given by
Δ U = Q + W
Q = 71.0 j
W = 25.0j
Δ U = Q + W
Δ U = 71 +25
Δ U = 96 j
The system's kinetic energy and potential energy together make up the system's internal energy. When a reaction is conducted at a constant pressure, the internal energy change (U) of the reaction is equal to the heat acquired or lost (enthalpy change).
A thermodynamic system's internal energy is its total internal energy. It is the energy required to build or prepare the system in the internal state that it is in at the time.
In thermodynamics, internal energy is a quantity or state function that characterizes a substance's energy when capillary effects and other external fields, such as electric and magnetic forces, are absent.
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Find online the annual 10-k report for costco wholesale corporation (cost) for sep. 2, . answer the following questions from the financial statements:
The annual 10-k report costco wholesale corporation is
a. 4.28 billion dollars.
b. 1.128 billion.
c. $2,393 billion
d. $481 million less.
Costco Wholesale Corporation: What is it?
The fee is a multibillion-dollar large container retail organisation that operates a network of comrades for the large container shops. it's miles the fifth-biggest retailer inside the globe as of the year 20220. It offers wine and natural goods for sale. From these operations, price receives $4,285 in coins. The coins spent on the brand new assets become system for sales of $2,393 million USD, and the depreciation expenditure changed into $1,127 USD. The value increases its holdings to roughly 481 million USD.
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In the lewis formula for hydrazinium ion, n2h5 , the total number of lone electron pairs around the two nitrogen atoms is:________
In the Lewis formula for hydrazinium ion, N 2H 5 +, the total number of lone electron pairs around the two nitrogen atoms is 1.
What is Lewis structure?
Lewis structures, often referred to as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDS), are diagrams that depict the interactions of atoms inside molecules as well as any lone pairs of electrons that may be present. Any molecule with a covalent link, as well as coordination compounds, can have a Lewis structure. Gilbert N. Lewis, who described it in his 1916 article, The Atom and the Molecule, gave the Lewis structure its name. Lewis structures add lines between atoms to represent shared pairs in a chemical bond, extending the idea of the electron dot diagram.
The two nitrogen atoms are surrounded by just one lone electron pair in the hydrazinium ion's Lewis formula, n2h5+.
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which low-energy state of condensed matter is characterized by structural rigidity and resistance to changes of shape or volume? gas
Low-energy state of condensed matter is characterized by structural rigidity and resistance to changes of shape or volume is solid.
What is solid?When particles are arranged and packed closely -- compared to those in a gas or liquid -- and are relatively stable, they are considered to be in solid state. Solids tend to have a rigid shape, as the atoms or molecules of matter in the solid state are generally compressed and tightly connected through the chemical bonds. These bonds can produce an amorphous shape or regular lattice.
In electronics, the solid state refers to components and systems based entirely on semiconductor materials, such as silicon, germanium or gallium arsenide. Transistors and diodes -- the most common solid-state devices -- are often combined with resistors, capacitors and other components to create the integrated circuits (ICs). All the electronic systems incorporate ICs and, therefore, transistors.
The particles that make up solid have the lowest energy, and vibrate in place. This results in the characteristics of a solid, such as definite shape and volume. A solid is actually the frozen state of matter for substance. A substance does not have to freeze at cold temperature. For example, the faucet you have at your lab station in chemistry, and the faucets in your home are frozen the stainless steel; and so is your desk, pencils, pens, cell phones, and computers are all frozen. In fact anything solid is frozen.
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QUESTION 17
IF a particular galaxy has a total mass of 10 to the 47 grams and the average star in that galaxy has a mass of 10 to the 33
grams, approximately how many stars are there in that galaxy? Give your answer to the nearest whole power of 10 by
entering the exponent only.
The number of stars present in the galaxy is 10 raised to the power of 14. So the exponent is equal to 14.
Given in the question
Total mass of the particular galaxy = 10 to the power of 47 grams
The average mass of the star in the galaxy = 10 to the power of 33 grams
We know that the total mass of the galaxy which is a collection of several thousand stars is equal to the sum of all the stars present in it. Also, the total mass of the galaxy can be calculated by multiplying the average mass of a star in the galaxy by the number of stars that are there in the galaxy.
So, Total mass = Average mass × Number of stars in the galaxy
Number of stars in the galaxy = Total mass of the galaxy/ Average mass of the star
Put in the values, we get
Number of stars in the galaxy = 10^47/10^33
Number of stars in the galaxy = 10^(47-33)
Number of stars in the galaxy = 10^14
So, the number of stars present in the galaxy is 10 raised to the power of 14. So the exponent is equal to 14.
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When deciding on your evidence for argumentation writing, make sure each piece passes the following criteria:
Purpose, accuracy, and authority
Currency, relevance, and audience
O Tone, accuracy, and relevance
O Authority, writing mode, and currency
Purpose, accuracy, and authority.
The first paragraph of your essay should outline your topic provide the background information you need to understand your claim, outline the evidence you present, and state your thesis. dissertation statement. This is part of the first paragraph. The five parts include a strong introductory paragraph with a clear thesis, three main paragraphs supported by detailed evidence, and a compelling conclusion.
Students should also use transition words and phrases to help readers explain their points of view. Developed by philosopher Stephen E. Toulmin, his Toulmin Method is a style of reasoning in which he decomposes claims into six components Claim Inference Warrant Limitation Refutation and Support. In Toulmin's method, each argument begins with three basic parts assertion justification and justification. These are the thesis statement the target audience needs, and support.
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a tire has a tread pattern with a crevice every 2.20 cm. each crevice makes a single vibration as the tire moves. what is the frequency of these vibrations if the car moves at 43.0 m/s?
The frequency of these vibrations if the car moves at 43.0 m/s is 1954.54 Hz.
Given that,
The speed of the car = 43m/s.
or the speed of the car = 4300cm/s
A tire has a tread pattern with a crevice = 2.20cm
Since the crevice hits every 2.20cm,
This happens,
= 4300cm / 2.20
= 1954.54.
Therefore,
The frequency is 1954.54Hz
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find the net force σf⃗ 3 acting on particle 3 due to the presence of the other two particles. report you answer as a magnitude σf3 and a direction θ measured from the positive x axis.
Therefore, the net force acting on particle 3 is 139.68 × 10—5 N, and the angle made it by with at the +x axis is 19.1°.
The charge of particle 1 is q1.
q1 = -6.6nC
The charge of particle 2 is q2.
q2 = -13.2 nC
Sides of the equilateral triangle = 3 cm = 3 × 10 —² m.
The force acting on particle 1 is,
[tex]F _{1} = \frac{kq_{1} q_{3}}{a ^{2} } [/tex]
[tex] = \frac{9 \times 10 ^{9} \times 6.6 \times 10 ^{ - 9} \times 8 \times 10 ^{ - 9} }{9 \times 10 ^{ - 4} } [/tex]
[tex]F _{1} = 52.8 \times 10 ^{ - 5} \: N[/tex]
[tex]F _{1} = F _{1} \: cos(60°)i + F _{1} \: sin(60°)j[/tex]
[tex]= ( - 26.4 \: i \: + 45.7 \: j \: ) ×10 ^{ - 5} [/tex]
The force acting on particle 2 is,
[tex] = \frac{9 \times 10 ^{9} \times 3.2 \times 10 ^{ - 9} \times 8 \times 10 ^{ - 9} }{9 \times 10 ^{ - 4} } [/tex]
[tex] = - 105.6 \times 10 ^{ - 5} \: j[/tex]
The net force acting on particle 3 is,
[tex]F_{Net} =F _{1} + F _{2}[/tex]
[tex] = ( - 132 \times 10 ^{ - 5} \: i + 45.7 \times 10 ^{ - 5} \: j)[/tex]
[tex]F_{Net} =139.68 \times \: 10 ^{ - 5} \: N[/tex]
Thus, the net force acting on particle 3 is 139.68 × 10—5 N.
Let the angle made by it with at the +x axis be θ.
[tex]cos \: θ = \frac{ - 132 \times 10 ^{ - 5} }{139.6 \times 10 ^{ - 5} } [/tex]
θ = 19.1°
Therefore, the net force acting on particle 3 is 139.68 ×
10—5 N and the angle made it by with at the +x axis is 19.1°.
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a rock is thrown vertically upward at an initial velocity of 70 m/s. what is the approximate acceleration of the rock when it reaches its maximum height?
A rock is thrown vertically upward at an initial velocity of 70 m/s.
The approximate acceleration of the rock when it reaches its maximum heigh is- zero
0 is the approximate acceleration of the rock whilst it reaches its most peak.given that rock is hurled vertically up into the air at a speed of 70 meters according to second. what's the rock's angular acceleration when it reaches its maximum point?(count on that the positive y direction is upward)?given that has reached its maximum factor, very last velocity V will identical 0.calculating the time the usage of the first regulation of movement.additionally, because the orientation is vertical instead of horizontal, the acceleration can be identical to zero.To learn more about acceleration here:-
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Where do you feel courage in your body and why? (with explanation) plsss answer it i need answer now plss
A hallmark of courage is being ready and willing to face challenging or uncomfortable circumstances. The word "bravery" is similar. It can also include doing so, even though confronting these situations fearlessly is generally thought of as showing courage.
In reality, courage is the capacity to move forward in the face of fear. The ability to behave bravely in the face of any anxiety or tension is what is meant by having courage. One of the finest ways to be courageous is to recognize your fears and then decide not to let them stop you. having the guts to handle risk in a responsible manner as opposed to acting cowardly or irrationally confident.
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university physics with modern physics and mastering physics access code (15th edition), by h. young and r. freedman.
University physics with modern physics and mastering physics access code (15th edition), by h. young and r. freedman.
Mark Hollabaugh, Normandale community university, EmeritusPhysics encompasses the massive and the small, the old and the modern day. From the atom to galaxies, from electric circuitry to aerodynamics, physics could be very loads part of the arena spherical us. You probable are taking this introductory course in calculus-based physics because of the fact it's far required for next guides that you plan to soak up education for a profession in era or engineering. Your professor wishes you to research physics and to revel in the experience. he or she might be very inquisitive about helping you look at this charming mission. that is a part of the purpose your professor chose this textbook on your path. that is also the purpose Drs. young and Freedman asked me to jot down this introductory segment. We want you to succeed! The cause of this section of university Physics is to give you some ideas with a purpose to assist your studying. particular pointers on the manner to use the textbook will comply with a short dialogue of modern day have a have a look at behavior and techniques.Learn more about Physics https://brainly.com/question/14338730
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an uncharged capacitor is connected to the terminals of a 4.0 v battery, and 12 μc flows to the positive plate. the 4.0 v battery is then disconnected and replaced with a 8.0 v battery, with the positive and negative terminals connected in the same manner as before.
The additional charge that flows to the positive plate from the 8 Volts battery is 12 x 10⁻³ Coulomb's.
We have an uncharged capacitor which is charged in two different ways using battery of two different voltages. Firstly, it is connected to the terminals of a 4.0 V battery, and 12 μc of charge flows to the positive plate. Then, the 4.0 V battery is disconnected and replaced with a 8.0 V battery
We have to determine the Additional charge that flows to the Positive plate from this 8 V battery.
What is Capacitance ?Capacitance is the ability of an object to collect and store energy in the form of an electrical charge. Mathematically -
C = Q/V
According to the question, we have -
Electric potential of battery 1 = V[1] = 4 V
Charge flow from battery 1 to the positive plate = Q[1] = 12 x 10⁻³ C
Electric potential of battery 2 = V[2] = 8 V
Now, using the following relation, we will find Q[2] {Charge flow from battery 2 to the positive plate} →
V[1] / V[2] = Q[1] / Q[2]
Substituting the values -
Q[2] = (12 x 10⁻³ x 8)/4 = 24 x 10⁻³ C
Additional Charge that flowed to the positive plate →
Q[2] - Q[1] = 12 x 10⁻³ Coulomb's
Hence, the additional charge that flows to the positive plate is [tex]12\times 10^{-3}[/tex] Coulomb's.
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[ The question given is incomplete, the complete question is -
"An uncharged capacitor is connected to the terminals of a 4.0 v battery, and 12 μc flows to the positive plate. the 4.0 v battery is then disconnected and replaced with a 8.0 v battery, with the positive and negative terminals connected in the same manner as before. How much additional charge flows to the positive plate" ]
how does the current motion of hnlc on oahu compare to the direction of pacific plate motion relative to the hawaiian hotspot over the past million years?
Now the islands are moving more north compared to before compare to the direction of pacific plate motion relative to the hawaiian hotspot over the past million years.
The Pacific Ocean's ocean floor is made up of multiple plates. In relation to the plate holding North America and to hot areas rising through the mantle from below the plates, the largest one, the Pacific Plate, is moving north-west (they generate islands like Hawaii). The plate is travelling around Hawaii at a rate of 7 cm per year.
A hot spot that provided magma produced deep under the mantle of the earth, which was used to create the long volcanic chain, did so over the course of about 70 million years. Over the course of around 70 million years, a hot spot supplied magma that was formed deep under the earth's interior (mantle), pushing its way through the earth's surface and ocean floor to construct volcanic islands.
The hot point continuously created new volcanoes on the Pacific Plate, creating the volcanic chain, while the Pacific Plate was shifted by tectonic forces inside the Earth.The Pacific Plate will move in the direction and at the rate determined by the distances between and the approximate ages of several of the Hawaiian volcanoes.
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When a dilute gas expands quasi-statically from 0.50 to 4.0 l, it does 250 j of work. assuming that the gas temperature remains constant at 300 k, what is the change in the internal energy of the gas?
The change in the internal energy of the gas is ΔE int =0 J.
Q=250J heat is absorbed by the gas in this process.
What is isothermal process?
A thermodynamic process known as an isothermal process keeps the system's temperature constant. Because heat is transferred into or out of the system so slowly, thermal equilibrium is preserved.
Givens:
Vi =0.5 L=0.5×10^ −3 m^3
Vf =4.0 L=4.0×10^−3 m^3
W= 250 J
T= 300 K
Because the gas temperature is constant, the process is ISOTHERMAL. As a result, the system's internal energy is constant.
ΔE int =0 J
We know that, ΔE int =Q−W
And we are aware that there has been no change in the system's inherent energy.
Therefore,0=Q−W
Q=W=250J
Q=250J
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Question:
When a dilute gas expands quasi-statically from 0.50 to 4.0 L, it does 250 J of work. Assuming that the gas temperature remains constant at 300 K, (a) what is the change in the internal energy of the gas? (b) How much heat is absorbed by the gas in this process?
In your own words, describe how matnothing
ter is identified.
How strong is the electric field between two parallel plates 4.4 mm apart if the potential difference between them is 220 v?
The electric field between the plates is 50,000 N/C.
CalculationIt is provided that the separation d between the plates is 4.4 mm and the potential difference V between the plates is 220 V.
The electric field E between the plates can be formulated as follows.
E=[tex]\frac{V}{d}[/tex]
substituting the values in the equation,
E= [tex]\frac{220}{0.0044}[/tex]
E= 50,000 N/C
Hence, we can say that the electric field between the plates is 45833.33 N/C.
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Uranus, one of the most distant planets in our solar system, is 2870 million kilometers from the sun. what is its distance from the sun in astronomical units?
The distance of Uranus from the Sun in astronomical units is 9.13 AU.
What is astronomical unit?
In our solar system, distances are really great. Therefore, astronomers frequently avoid using miles or kilometers when describing the distances to planets, asteroids, comets, or spacecraft. They substitute astronomical units, or AU, which represent the typical separation of the Earth from the sun. That translates to around 93 million miles, 150 million kilometers, or 8 light-minutes.
By above definition, we can say that
1 astronomical unit (AU) = 150 million kilometers (km)
In order to find the distance in astronomical units multiply the given distance expressed in kilometers of Uranus, which is 2870 million kilometers, by the unit ratio, 1 AU per 150 million kilometers, as shown on the expression:
[tex](2870 million Km)(\frac{1Au}{150millionKm})[/tex]
Therefore, the distance of Uranus from the Sun is 19.13 AU.
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A parallel plate capacitor has a plate area of 0.565 m2 and a plate separation of 1.85 mm . what is its capacitance?
1.72*10^-9
On an empty capacitor, there is no dielectric so E= 8.85E-12
C=EA/(d)
c is capacitance, A is area , d is distance between the parallel plate and E is dielectric constant.
C=(8.85E-12 c2/Nm2)(0.535m2)/ (2.75*10^-3m)
C= 1.72*10^-9
Capacitance is the ability of a dielectric to hold or store an electric charge.Dielectric constant is a factor that indicates the ability of an insulator to concentrate electric flux, also known as relative permittivityDielectric strength is the ability of a dielectric to withstand a potential difference without internal arcingDielectric absorption is the nability of a campacitor to discharge completely to zero. This is sometimes called battery action or capacitor memory.To know more about capacitance visit : https://brainly.com/question/14746225
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5. A ball is dropped from rest at a height of 25.0 m above the ground. A. How fast is the ball moving when it is 10.0 m above the ground? B. How much time is required for it to reach the ground level? Ignore the effects of air resistance.
A. The ball is moving 17.15 m/s when it was 10 m above the ground
B. The time required for the ball to reach the ground is 2.26 s
How to determine the time to fall till 10 m above the ground Initial velocity (u) = 0 m/sAcceleration due to gravity (g) = 9.8 m/s²Height (h) = 25 - 10 = 15 mTime (t) = ?h = ½gt²
15 = ½ × 9.8 × t²
15 = 4.9 × t²
Divide both side by 4.9
t² = 15 / 4.9
Take the square root of both side
t = √(15 / 4.9)
t = 1.75 s
A. How to determine the velocity when the ball is 10 m above the ground Time till 10 m above the ground (t) = 1.75 sAcceleration due to gravity (g) = 9.8 m/s²Velocity (v) = ?v = gt
v = 9.8 × 1.75
v = 17.15 m/s
B. How to determine the time taken to reach the groundInitial velocity (u) = 0 m/sAcceleration due to gravity (g) = 9.8 m/s²Height (h) = 25 mTime (t) = ?h = ½gt²
25 = ½ × 9.8 × t²
25 = 4.9 × t²
Divide both side by 4.9
t² = 25 / 4.9
Take the square root of both side
t = √(25 / 4.9)
t = 2.26 s
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The gravitational acceleration is 9.81 m/s2 here on earth at sea level. what is the gravitational acceleration on the top of mount everest?
The gravitational acceleration on the top of Mount Everest is 9.773 m/s^2.
What is gravitational acceleration?
Gravitational acceleration (symbolized g) is an expression used in physics to indicate the intensity of a gravitational field. It is expressed in meters per second squared. At the surface of the earth, 1 g is about 9.8 meter per squared second.
So, as mentioned in question g at surface of the earth is 9.81.
and the height of the Mount Everest is 8848 m.
Let, g' be the acceleration due to gravity on the top of Mount Everest.
By the equation,
[tex]g' = g(1-\frac{2h}{h})[/tex]
[tex]g' = 9.8(1-\frac{17696}{6500000})[/tex]
[tex]g' = 9.8(1-0.00276)[/tex]
[tex]g' = 9.8(0.99724)[/tex]
[tex]g' = 9.773[/tex]
Therefore, the gravitational acceleration at the top of the Mount Everest is [tex]9.773 \frac{m}{s^2}[/tex] (9.773 meter per squared second).
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Consider the electronic transition from n = 7 to n = 4 in the hydrogen atom. is light absorbed or emitted? calculate the energy, the frequency and wavelength (nm) of the photon involved.
Light is emitted, energy is 9.16 × [tex]10^{-20}[/tex] J , frequency is 1.38 × [tex]10^{-14}[/tex] [tex]s^-[/tex]
and wavelength is 2.17 × [tex]10^{-6}[/tex] m
Explanation
n = 7 → n = 4
higher → lower
Light is emitted
[tex]\Delta[/tex]E = [tex]\frac{-13.6}{7^2} - (\frac{-13.6}{4^2})[/tex]
[tex]\Delta[/tex]E = 0.85 - 0.277
= 0.572 eV
[tex]\Delta[/tex]E = 9.16 × [tex]10^{-20}[/tex] J -> [energy calculated]
[tex]\Delta[/tex]E = hv (h is Planck's constant and v is frequency)
v = [tex]\frac{\Delta E}{h}[/tex] = [tex]\frac{9.16 * 10^{-20}}{6.626 * 10^{-39}}[/tex]
v = 1.38 × [tex]10^{-14}[/tex] [tex]s^-[/tex] ->[frequency calculated]
[tex]\Delta[/tex]E = [tex]\frac{hc}{\Lambda}[/tex] (c is speed of light)
[tex]\Lambda[/tex] = [tex]\frac{hc}{\Delta E}[/tex]
[tex]\Lambda[/tex] = [tex]\frac{6.626 * 10^{-34} . 3*10^8 m/s}{9.16 *10^{-20 J} }[/tex]
[tex]\Lambda[/tex] = 2.17 × [tex]10^{-6}[/tex] m ->[wavelength calculated]
What is energy?Energy, according to scientists, is the capacity for work. The ability to transform energy from one form to another and use it to perform tasks is what makes modern civilization possible. People utilize energy to travel by foot and bicycle, drive vehicles on land and in water, prepare meals on stoves, create ice in freezers, illuminate our homes and workplaces, create goods, and launch people into space.
Energy comes in a wide variety of forms, including:
HeatLightMotionElectricalChemicalGravitationalThese energies can be divided into two categories for working energy:
Potential or stored energyKinetic or working energyLearn more about energy
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9. The first system of measurement that was based on units of ten was the ____ system
Answer:
metric
Explanation:
How much energy is required to lift a 97 kg barbell 1.25 meters?
Answer:
1,188.25 J
Explanation:
PE= mgh
PE=(97)(9.8)(1.25)
PE= 1,188.25 J
How many walking paces are there approximately as you walk down Main Street (0.25 miles)?
1 mile = 5280 feet;
1 foot = 12 inches;
22 inches = 1 walking pace
The number of walking paces as you walk down main street (0.25 miles) is 720 walking paces
How to convert 0.25 mile to feet1 mile = 5280 feet
Therefore,
0.25 mile = (0.25 mile × 5280 feet) / 1 mile
0.25 mile = 1320 feet
How to convert 1320 feet to inches1 feet = 12 inches
Therefore,
1320 feet = (1320 feet × 12 inches) / 1 feet
1320 feet = 15840 inches
How to convert 15840 inches to walking pace22 inches = 1 walking pace
Therefore,
15840 inches = (15840 inches × 1 walking pace) / 22 inches
15840 inches = 720 walking paces
Thus, we can conclude that as you walk down main street (0.25 miles), there are 720 walking paces
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you walk 9.6km in 4.5h , what the average speed
At+what+speed,+as+a+fraction+of+ccc,+will+a+moving+rod+have+a+length+55+%%+that+of+an+identical+rod+at+rest?
The speed of a moving rod that has a length 55 % that of an identical rod in terms of c will be v/c= 0.824
or v = 0.824c.
The formula for length contraction rod is,
L = L1{√(1-v^2/c^2)}
Here L is the length of the moving rod
L1 is the length of the stationary rod
v is the velocity with which the rod is moving
c is the speed of light
We are given that
L = 55% of L1 = 0.55L1
Putting the values in the above equation,
0.55L1 = L1{√(1-v^2/c^2)}
0.55 = {√(1-v^2/c^2)}
Squaring both sides
(0.55)^2 = 1- v^2/c^2
V^2/c^2 = 1 - 0.3025
V^2/c^2 = 0.6975
v/c = 0.824
Thus, the speed of a moving rod that has a length 55 % that of an identical rod in terms of c will be v/c= 0.824 or v = 0.824c.
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1. DCI Forces and Motion A ball is rolling down a flat, frictionless ramp with
a constant velocity of 13 m/s. What is the acceleration of the ball over three
seconds? Over an infinite number of seconds? Explain your answer.
The acceleration of the ball is zero.
What is the acceleration?The term acceleration refers to the rate of change of velocity with time thus we can write;
a = d(v)/dt. This simply means the change in velocity with respect to time in the calculus notation.
This implies that before we can talk of acceleration the velocity must be changing. We can not have acceleration when the velocity is constant. It violates the very definition of acceleration. As such, the acceleration of the ball is zero.
Thus whether over a period of three seconds or over an infinite period of time, the acceleration would remain zero because the velocity is constant and does not change over the time interval as given.
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