Acceleration increases over time once a force is applied to the object. determine the acceleration at 3.5 sec? a) 3 m/s2 b) 6 m/s2 c) 15 m/s2 d) 53 m/s2

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?

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?