Question

1. Compute the distance between earth and a star 25.5 trillion miles away in light years.

2. A 1.5-tonne vehicle is accelerated to 90 mph in 10 seconds. Compute the force exerted by
engine if friction losses are ignored.

3. 1200 liters of water are pumped through 10-meter height in 15 minutes. Compute the rating
of the water pump in horsepower.

4. A ½ horsepower electric motor is operated for 5 days every week. Assuming 85%
efficiency, compute the amount of energy consumed in 1 year in kWh and MJ. Also,
establish the relation between kWh and MJ from your answers.

NOTE :( CAN U KINDLY SOLVE EACH QUESTION AND EXPLAIN THE STEPS I WAS FACING PROBLEM IN THE ABOVE MENTIONED QUESTIONS )
KINDLY SOLVE ALL THE QUESTIONS (THANK YOU )

Answer 1