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levacccp [35]
3 years ago
9

find the amount of energy transfered to a box that you are pushing if it required 720 watts of power to push the box for 6 secon

ds​
Physics
1 answer:
charle [14.2K]3 years ago
4 0

The amount of energy transferred is 4320 J

Explanation:

Power is defined as the amount of energy transferred per unit of time:

P=\frac{E}{t}

where

P is the power

E is the amount of energy transferred

t is the time

In this problem, we have:

P = 720 W is the power

t = 6 s is the time elapsed

Solving for E, we find the energy transferred needed to push the box:

E=Pt=(720)(6)=4320 J

Learn more about power:

brainly.com/question/7956557

#LearnwithBrainly

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The emf is induced in the wire will be 1.56 ×10 ⁻³ V. The induced emf is the product of the magnetic field,velocity and length of the wire.

<h3>What is induced emf?</h3>

Emf is the production of a potential difference in a coil as a result of changes in the magnetic flux passing through it.

When the flux coupling with a conductor or coil changes, electromotive Force, or EMF, is said to be induced.

The given data in the problem is;

B is the magnitude of the magnetic field,= 5.0 ×10⁻⁵ T

V(velocity)=125 M/SEC

L(length)=25 cm=0.25 m

The maximum emf is found as;

E=VBLsin90°

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E=1.56 ×10 ⁻³ V

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2 years ago
In a photoelectric experiment, you shine light onto an electrode and record a current of 25 μA. When you apply +500 mV to the el
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Answer:

2.083 V.

Explanation:

Stopping potential is the potential that is required to stop the current to zero . This potential is applied externally to oppose the potential created by the photoelectric effect . It gives the measure the photoelectric potential being generated .

Here current drops to 25 μA to 19 μA by a potential of 500mV

Change in current

= 25 - 19 = 6 μA

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To reduce current 0f 25 μA

requirement of V = (500 / 6 )  x 25 =   2083.33 mV = 2.083 V.

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