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vfiekz [6]
3 years ago
5

How is power defined

Physics
2 answers:
Sliva [168]3 years ago
6 0
Power is the work done per second..
p=w/t
Rasek [7]3 years ago
3 0
Power is defined as the amount of work done per time taken or u can say that power is the energy over time taken.
basically p=energy /time taken
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Where is the potential energy equal to zero?
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im sure your already past this but it's E.

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3 years ago
How are metal bridges built to cope with changes of temperature?
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8 0
2 years ago
A motorcycle is traveling east at a rate of 56mph.it take 6.7 s for it to decrease its speed to 35mph. How far does the motorcyc
Phantasy [73]
Initial speed = 56mph
Final speed = 35mph

Time taken = 6.7seconds...

Converting the time to hour.. Divide by 3600..
= 6.7/3600

=0.00186hour..

Acceleration = v-u/t

a = 35-56/0.00186
a = -11283.6mph²

The negative sign shows that it decelerated...

V² = u²+2as

(35)² = (56)² + 2×-11283.6×s
Where s is the distance covered within that time...

1225 = 3136 - 22567.2s

22567.2s = 3136-1225

22567.2s = 1911

S = 1911/22567.2

S = 0.08468miles...

But at the end of the question we were made to understand that 1miles = 5280ft

Therefore 0.08468miles = (0.08468×5280)ft

= 447. 11feets...

Which is approximately 447ft.....


Hope this helped.... ?
8 0
3 years ago
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