On a frictionless, horizontal air table, puck A with a mass of 0.25 kg is moving to the right toward puck B with a mass of 0.35 kg, which is
initially at rest. After the collision, puck A has a velocity of 0.12 m/s
to the left, and puck B has a velocity of 0.65 m/s to the right. What
was the speed of puck A before the collision?

How would a small bar magnet be oriented when placed at position x?

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these