A pulley system has an efficiency of 65.1%. If you perform 350 J of work, how much useful work does the pulley perform?

You did 200 joules of work lifting a 150-newton backpack. How high did you lift the backpack?

A rock falls (vi=0) from the top of a 128 m cliff to the ground below. How long does it take for the rock to fall?

What is required for the offspring to have a dominant trait

7. How much support force does a table exert on a book that weighs 15 N when the book is placed on the table? - What if a hand pushes down on the book with a force of 20 N? - What if a rope lifts up on the book with a force of 10 N?

What is the speed of a car that travels 14 meters in 2 seconds?

How would an unbalanced chemical equation convey misleading information about what took place during a chemical reaction?

A car rounds a 75-m radius curve at a constant speed of 18 m/s. a ball is suspended by a string from the ceiling the car and moves with the car. the angle between the string and the vertical is:

Emission of light from an atom occurs when an electron

Which is an example of transfroming potential energy to kinetic

Place the ball in the plastic bag, and twist the top so the ball is secure in the bag. Wrap the twisted portion with tape so it stays tight. Use the hole punch or scissors to poke a hole in the part of the bag that's above the ball.