Farthest Galaxy in the universe

Kinetic friction acts on a baseball player sliding into first base. Will the player's velocity change?

A truck moving at 45 m/s passes a police car moving at 36 m/s in the opposite direction. if the frequency of the siren is 500 Hz relative to the police car, what is the frequency heard by an observer in the truck after the police car passes the

Which of the following statements is true? A.) All of the sun's heat is reflected by the Earth's atmosphere. B.) Radiation is the transfer of heat between objects which are not touching. C.

Do magnets have to touch each other in order to experience a magnetic force

Tim is riding a bike at a velocity of 10m/s north. As he starts to climb a hill, his velocity decreases to 5 m/s north. Is the acceleration positive or negative? Calculate the acceleration.

Atoms in a molecule are held together through shared

Why is it not a good idea to stick a metal fork in a plugged in toaster to remove a stuck piece of toast? In your explanation be sure to use the concepts of electrical conduction and voltage.

Two identical rocks are dropped from different heights. The higher one starts out four times as high as the lower one. How much faster is the higher one going just before they hit?

A kid on a playground swing makes 6 complete to-and-from swings each 30 seconds (a) the frequency of the swinging is? (b) the period of the swinging is?

Read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a 100 kg ball traveling at 5 m/s. A 1,000 kg ball traveling at 5 m/s would have kinetic energy.