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Vesnalui [34]
3 years ago
9

Which quantity is represented by the area under a force-time graph?

Physics
1 answer:
Yanka [14]3 years ago
3 0

Answer:

C momentum change

Explanation:

An impulse results in a change of momentum.

An impulse is a force action over a period of time.

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Which of the following BEST describes all planets in the universe?
Harman [31]

Answer:

c large, spherical body that orbits in a clear path around a star

Explanation:

you can not say b because the sun is a star and you cant say a and d because all planets are not made of rock and all planets are not made of gas

7 0
2 years ago
A sphere 5 cm in diameter has a small scratch on its surface. When the scratch is viewed through the glass from a position direc
Molodets [167]

Answer

given,

diameter of sphere = 5 cm

radius of sphere = -2.5 cm

refractive index for glass n₁ = 1.5

refractive index for air n₂ = 1

magnification of the glass = ?

now,

\dfrac{n_1}{S} +\dfrac{n_2}{S'}= \dfrac{n_2-n_1}{R}

\dfrac{1.5}{5} +\dfrac{1}{S'}= \dfrac{1-1.5}{-2.5}

\dfrac{1.5}{5} +\dfrac{1}{S'}= \dfrac{0.5}{-2.5}

                  S' = - 10 cm

magnification

 m = \dfrac{-n_1S'}{n_2S}

 m = \dfrac{-1.5\times -10}{1\times 5}

 m = + 3

3 0
3 years ago
How many grams of sugar are in 0.5mol C6H12O6?
Anastasy [175]

Answer:

90.07794 grams

Explanation:

5 0
2 years ago
Read 2 more answers
James Joule (after whom the unit of energy is named) claimed that the water at the bottom of Niagara Falls should be warmer than
Y_Kistochka [10]

The complete question is;

James Joule (after whom the unit of energy is named) claimed that the water at the bottom of Niagara Falls should be warmer than the water at the top, 51 m above the bottom. He reasoned that the falling water would transform its gravitational potential energy at the top into thermal energy at the bottom, where turbulence brings the water almost to a halt. If this transformation is the only process occurring, how much warmer will the water at the bottom be?

Answer:

Water becomes warmer by a temperature of ΔT = 0.119 K

Explanation:

If we assume that gravitational kinetic energy will be converyrf into thermal enrgy, we will have;

Q = U

So, m•c_w•ΔT = mgh

Where;

c_w is specific heat capacity of water with a value of 4184 J/Kg.K

ΔT is change in temperature indicating how warmer the water will be. Thus making ΔT the subject, we have;

ΔT = gh/c_w

So, ΔT = 9.8 x 51/4184 = 0.119 K

4 0
3 years ago
The approximate mass of a nickel in kilograms is
mart [117]
<span>The nickel has a mass of approximately 0.005kg</span>
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2 years ago
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