Bill does 1500 j of work on a leaver, which is a simple machine. The lever does 1350 j of work on a stone. What is the efficiency of the leaver?

Your boss at the Cut-Rate Cuckoo Clock Company wants to save money on materials. You are asked to reduce the balance wheel, which is cylindrical, dimensions to one-third their original values.

An emf is induced by rotating a 1000-turn, 20.0 cm diameter coil in the Earth's 5.00*10-5T magnetic field.

A child pulls a balloon for 12 m with a force of 1.0 n at an angle of 60 below horizontal. how much work does the child do on the balloon?

What are the units of pressure

Which of the following everyday phenomenon are based on the Faraday's effect? a. using your TV remote to turn it on and off b. reading data from your computer's hard drive c. playing a CD/DVD swiping your credit/debit card at the market d.

Use your knowledge of the state of matter and the other physical properties of matter to write an explanation for what may have caused the following situation: Although it hasn't rained in a week, every morning the grass and the car windows are wet.

What is three example of technology

Lisa has three classes that each last 50 minutes qhat ia the total nuber of minutes of minutes of the three classe?

Which has a greater speed a heron hat travels 600m in 60 seconds or a duck that travels 60 m in 5 seconds? Explain

A machine shovel moves dirt at the rate of 1,100 pounds of dirt 1 foot in 1 second. How many horsepower is this?