2. A cart starts from rest at the top of a hill, and is bumped down the rough hill helghi (m:)
m =20kg. hi= 5m
Vi= 0. bf= 0m
A) caLalculate the initial amount of energy stored in the cart.
ments
By Determine final velocity of the cart at the bottom of 10% of the energy is dissipated by friction.

(science)study the following ocean currents map. an ocean currents map is shown. on the map the locations for san diego, california and savannah, georgia are marked. there is a looping current from the north past san diego and a looping current from the south near savannah which statement is most likely correct about the average temperatures in san diego, california as compared to savannah, georgia? it is higher in savannah because of the cool ocean currents from the south. it is higher in savannah because of the warm ocean currents from the north. it is lower in san diego because of the warm ocean currents from the south. it is lower in san diego because of the cool ocean currents from the north.

On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.