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valkas [14]
3 years ago
12

The unit of kinetic energy is the _______. The unit of kinetic energy is the _______. hertz meter watt joule radian

Physics
1 answer:
Musya8 [376]3 years ago
7 0

Answer:

joule

Explanation:

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______ can occur when water-saturated soil turns from a solid to a liquid as a result of an earthquake.
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The answer is liquefaction
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A lamp draws a current of 0.50 A when it is connected to a 120 V source? What is the resistance of the lamp?
emmainna [20.7K]
Given,
Current (I) = 0.50A
Voltage (V) = 120 volts
Resistance (R) =?
We know that:-
Voltage (V) = Current (I) x Resistance (R)
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= 120/0.50
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3 years ago
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What is the momentum of a 546,540 kg train that is travelling at 7.8 m/s​
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The moon’s period of revolution is 27 1/3 days, and its period of rotation about its axis is _____.
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It lasts 29 1/2 days.
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3 years ago
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What is the sprinters output at 2.0 s, 4.0 s and 6.0 s?
kari74 [83]

A 59 kg sprinter, starting from rest, runs 47 m in 7.0 s at constant acceleration.?  

What is the sprinter's power output at 2.0 s, 4.0 s, and 6.0 s?  

Instantaneous Power is the force times velocity  

P = Fv  

Because the acceleration is constant, the force will be constant as well  

F = ma  

P = mav  

for constant acceleration, the velocity at each time is found using  

v = at  

P = ma(at) = ma²t  

find the acceleration using kinematic equation  

s = ½at²  

a = 2s/t²  

a = 2(47) / 7.0²  

a = 1.918 m/s²  

P(2.0) = 59(1.918²)2.0 = 434.25 W = 0.43 kW  

P(4.0) = 59(1.918²)4.0 = 868.51 W = 0.87 kW  

P(6.0) = 59(1.918²)6.0 = 1302.76 W = 1.3 kW  

I hope this helped.  


5 0
3 years ago
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