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Katena32 [7]
2 years ago
12

Which item could you use in place of an ammeter to demonstrate that a

Physics
1 answer:
love history [14]2 years ago
6 0

Answer:

the answer is D

Explanation:

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A 1000 kg elevator accelerates upward at 1.0 m/s2 for 10 m, starting from rest. a. How much work does gravity do on the elevator
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Answer:

a)= 98kJ

b)=108kJ

c) = 10kJ

Explanation:

a. The work that is done by gravity on the elevator is:

Work = force * distance  

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= 1000 * 9.81 * 10  

= 98,000 J

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b)The net force equation in the cable

T - mg = ma

T = m(g+a)

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T = 10800N

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W = T × d

= 10800N × 10

= 108000

=108kJ

c) PE at 10m = 1000 * 9.81 * 10 = 98,100 J  

Work done by cable = PE +KE  

108,100 J = KE + 98,100 J  

KE = 10,000 J

= 10kJ

=

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