50 J of work was performed in 20 seconds. How much power was used to do this task? A. 4 W B. 24.5 W C. 0.4 W D. 2.5 W

A piece that lands on the earths surface is called a

A car is moving at a constant 34 m/s for 7 seconds. What is the average acceleration of the car?

What mediums are best for light waves?

Which device converts kinetic energy into electrical energy? an electric generator an electric motor a step-down transformer a step-up transformer

Which of the following best describes longitudinal waves

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.