Two children are sliding down a snowy hill which is inclined by 44.6 degrees with respect to horizontal. One has a rough sled which has a coefficient of kinetic friction between it and the snow of μ​k= 0.350; the other has a slippery sled which has a coefficient of kinetic friction between it and the snow of μk= 0.161. If both children start at the top of the 40.4 m tall hill initially at rest, what is the difference in speed between these two sleds at the bottom of the hill?

Which of the following energy forms are invovled in a nuclear power plant ? heat ,sound , electrical , nuclear ,mechanical

Luke and carrie are driving down a straight section of the interstate at 70 mph in luke's new convertible. carrie is drinking a soda in the passenger seat. when she is done she tosses the bottle straight up in the air, just above the height of the car. what will happen to the bottle if air resistance is neglected? a. the bottle will land in carrie's lap. b. not enough information is given. c. the bottle will land on the interstate in front of the car. d. the bottle will land on the interstate behind the car.

What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green