A transformer is a device that has a primary and secondary coil and is used to change the voltage of electric current. True or False

A block sits at rest on a table, 0.9 m above the ground. If the black has a six J of energy (with the ground set as zero height level), what is the mass of the block?

A 0.426 kilogram football is kicked by a punter. If the applied force to the call is 62 Newton's what is the acceleration of the ball.

You are a sales representative for a company that makes a new alternate fuel for vehicles. You have prepared a presentation for the environmental engineers to sell your new product.

What 2 things does all velocities have?

How did Ernest Rutherford change the atomic model based on his experimental results? A. He placed electrons in orbits around the nucleus. B. He described the atom as a sea of positive charge sprinkled with electrons. C.

A father racing his son has 1/3 the kinetic energy of the son, who has 1/2 the mass of the father. The father speeds up by 1.4 m/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son

A 2 kg book is pushed across a table is a force 4. Assuming no friction, what is the acceleration of the book?

When electricians use wiring for houses they use both copper and rubber. Which do you think is used as a conductor?

Suppose that 600 W of radiation in a microwave oven is absorbed by 250 g of water in a very lightweight cup. Approximately how long will it take to heat the water from 20 C to 80 C? (A) 50 s (B) 100 s (C) 150 s (D) 200 s

Calculate the velocity of a 1650kg satellite that is in a circular orbit of 4.2 x 10^6m above the surface of a planet which has a radius 3.95 x 10^5 m and the period of the orbit is 2.0 hours.