A ball is kicked from the origin with an initial speed of 10 = 25.0 /, at an angle with the horizontal. At the same time, a second ball is thrown vertically upward from the ground at
point P, at = 40.0 m with an initial speed of v20 = 15.0 m/s as shown in the figure below.
Assume that both balls are shot at time t = 0
a) If the two balls are to hit each other, what must θ be? [4 points]
b) At what time the two balls will hit each other?

What happens to atoms and chemical bonds during a reaction?

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)

Ideal meters problem. what internal resistance is ideal for a voltmeter? what internal resistance is ideal for an ammeter?