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iris [78.8K]
3 years ago
12

Which statement about energy conservation BEST explains why a bouncing basketball will not remain in motion forever?

Physics
1 answer:
bearhunter [10]3 years ago
7 0

Answer: d

Explanation:

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The trachea is a tube that carries air inside the lungs.
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Why do hurricanes tend to form in warmer climates
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Warm air rises causing an area of lower air pressure below.
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When the batter hit the foul ball, the baseball moved upward to a delighted fan in the top deck.
oee [108]

Answer:

B) Kinetic energy increases, potential energy decreases

Explanation:

In a given system, when a body is at rest, v =0m/s, the kinetic energy is at zero while the potential energy is at maximum. However, when a body is in motion with a velocity = v, the potential energy is at zero while the kinetic energy is at maximum.

Before this happen, the a body at rest (P.E = max) is set on motion, the kinetic energy gradually increases till it converts all the potential energy in the system to kinetic energy and then reverses back when the body goes to rest again.

In this case, before the batter hits the ball, the kinetic energy was at zero while the potential energy was at maximum. However, when he hits the ball and sets it into motion with a velocity V, the potential energy converts to kinetic energy and moves the ball with that energy till it has expanded it and comes to rest.

Potential Energy → Kinetic Energy → Potential Energy.

That's how the system keeps changing.

6 0
3 years ago
One person drives 60,000 miles in a car that averages 30 miles per gallon (mpg), while another person drives 60,000 miles in a c
Solnce55 [7]

Answer:

20000 pounds

Explanation:

Generally 1 gallon of fuel burnt gives of 20 pounds of CO₂

Difference in the gallons of fuel burnt

\dfrac{60000}{20}-\dfrac{60000}{30}=1000\ gal

The 20 mpg car burns 1000 gallons of fuel more than the 30 mpg car

The amount of CO₂ would be

1000\times 20=20000\ pounds

The fewer pounds that the 30 mpg car would release is 20000 pounds

4 0
3 years ago
A wire is 1.1 m long and 0.91 mm in cross-sectional area. It carries a current of 4.4 A when a 1.8 V potential difference is app
Vlad [161]

Answer:

The conductivity of the material from which the conductor is made is 2.95 x10⁶  [S. m⁻¹]  .

Explanation:

L= 1.1m

S= 0.91 mm²= 9.1 x10⁻⁷ m²

I= 4.4 A

V= 1.8V

\frac{V}{I} =R\\\\\frac{1.8V}{4.4A} =R= 9/22 ohms

R=9/22Ω

R=\frac{L}{σ . S} \\\\Conductivity=sigma=\frac{L}{R.S} \\\\Conductivity= \frac{1.1m}{9/22 ohms . 9.1 E10 (-7) square meters}

Conductivity=2.95 x10⁶  [S. m⁻¹]

3 0
3 years ago
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