Use the exact values you enter to make later calculations. jack and jill are on two different floors of their high rise office building and looking out of their respective windows. jack sees a flower pot go past his window ledge and jill sees the same pot go past her window ledge a little while later. the time between the two observed events was 4.4 s. assume air resistance is negligible. (a) if the speed of the pot as it passes jill's window is 65.0 m/s, what was its speed when jack saw it go by?

Avoltage source vs = 10 v is in series with a resistor of 10 kohm. if the source transformation theorem is applied, what will the value of the current source be in ma ?

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?

What are the three ways that an object can accelerate