A person sitting in a chair with wheels stands up, causing the chair to roll backward across the floor. How would you describe the momentum of the chair?

A curling stone, with a mass of 20.0 kg, slides across the ice at 1.50 m/s. it collides head on with a stationary 0.160-kg hockey puck. after the collision, the puck's speed is 2.50 m/s. what is the stone's final velocity?

A sodium ion has 11 protons and 10 electrons. what is its charge?

How does thinking about light as a stream of particles, rather than a single wave?

Terms used to measure motion

Suppose you have two resistors, R1 and R2, connected in series to a power source of voltage V, and that the resistor R2 has a much higher resistance than R1. Which of the following statements are true? Select one or more: a.

A 26-g steel-jacketed bullet is fired with a velocity of 630 m/s toward a steel plate and ricochets along path CD with a velocity 500 m/s.

A small boat is carrying four people across a river. Without any paddling, the boat moves downstream at a steady speed of 5 m/s. If the average weight of the four people is 60 kg, then what is the speed of the boat after one person gets?

Does temperature affect the dissolving phase?

In a clear, coherent, paragraph-length answer, explain why the speed of the apple half way between the release and the maximum height is not half the initial speed.

In pea plants Round (R) is a dominant trait and wrinkled nose (r) is a recessive trait. Which combination would result in wrinkled seeds? 1. RR 2. Rr 3. rr 4. ww