In a ramp experiment, a trolley of mass 0.5 kg is pushed at a velocity of 0.3m/s. It collides with a second stationary trolley of mass 1.0kg and sticks to it. After collision, both trolleys move off with a velocity of 0.1m/s. Has momentum been conserved?

Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c

Difference between series and parallel circuits