Now you try (practice #1) a football quarterback throws the football resulting in an incomplete pass. the quarterback is
1.96 m tall and the ball travels about 18.0 m before hitting the ground. assuming the ball was thrown horizontally, with
what initial velocity does he throw the ball?

Hydrogen and helium are both members of?

What are known as the properties of substances that describe a substance et does not change that substances?

An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)