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kakasveta [241]

3 years ago

8

7. A stereo is able to convert 20% of its electrical energy into sound. If 1000 J of sound energy is produced, calculate the ele

ctrical energy used [Show all work].
8. A vehicle is only 18% efficient. How was the other 82% of the energy lost?

1 answer:

Sonja [21]3 years ago

3 0

Answer:

As 20/100 E= 1000

E= 10,000/2

=5000J

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a batsman deflects a ball by an angle of 45 without changing its initial speed which is equal to 54km/h.what is the impulse impa

Andre45 [30]

Answer:

the impulse imparted to the ball is 4.158 kg.m/s

Explanation:

Please find attached image for diagram.

Given;

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the final speed of the ball along B, = u (in reverse direction)

The initial momentum of the ball, P₁ = mucosθ

The final momentum of the ball is P₂ in reverse direction to P₁.

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6 0

3 years ago

inn [45]

Answer:

It would be electrical energy to kinetic energy

Explanation: because of the motion that fan has now.

8 0

3 years ago

Read 2 more answers