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3 years ago

What is the relationship between work and power

2 answers:

5 0

Work is basically referring to force with energy, and referred with the factor of heat. Power is defined with work, per unit in time.<span />

Mashcka [7]3 years ago

3 0

Power is the rate work is usually done in.

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A capacitor is connected to a power source and begins charging. What causes the capacitor to stop charging while it is still con

Yuri [45]

Charging stops when the voltage across the capacitor reaches the voltage of the power source.

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2 years ago

How many dB greater than 4 Watts is 64 Watts?

Novay_Z [31]

Answer:

64 Watts is 12dB greater than 4 Watts

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3 years ago

A marble slides without friction in a vertical loop around the inside of a smooth, 28.6 cm diameter horizontal pipe. The marble'

Leviafan [203]

Answer:3.49 m/s

Explanation:

Given

Speed of marble at Bottom $v=4.22 m/s$

Diameter of loop $d=28.6 cm$

As Energy is conserved therefore Energy at top is equal to energy at bottom

$E_T=E_B$

$\frac{mv^2}{2}+mgh=\frac{mv_0^2}{2}$ ,where $v_0$ is the velocity at bottom

$\frac{v^2}{2}+gh=\frac{v_0^2}{2}$

$v_0^2=v^2+2gh$

$v^2=v_0^2-2gh$

$v=\sqrt{v_0^2-2gh}$

$v=\sqrt{4.22^2-2\times 9.8\times 0.286}$

$v=\sqrt{17.8084-5.6056}$

$v=3.49 m/s$

7 0

3 years ago

True or false if an object has energy it must be moving

Drupady [299]

Answer:

Explanation:

If an object is moving, it is said to have kinetic energy (KE). Potential energy (PE) is energy that is "stored" because of the position and/or arrangement of the object. The classic example of potential energy is to pick up a brick. When it's on the ground, the brick had a certain amount of energy.

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3 years ago

Read 2 more answers

Why do seat belts help protect passengers when a car stops quickly? Explain your answer in terms of forces and motions.

Mamont248 [21]

Answer:

If the driver is wearing a seat belt, the seat belt rather than the windshield applies the unbalanced force that stops the driver's forward motion. The force from the seat belt is applied over a longer time, so the force causes less damage.

Explanation:

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3 years ago