Hannah has decided to leave school and join the rodeo tour. In the first event, she is riding a bucking bronco when she is thrown off. At the instant she leaves the
horse she is located 1.6 m above the ground and is moving straight up at 4.0
m/s.
a) What maximum height above the ground does Hannah reach?
b) At what speed will she hit the ground?
c) At what initial speed would a heavier cowgirl have to be travelling to reach the
same height as Hannah in (a)? Explain.

Aquantity of gas has a volume of 1.5 m3 and an absolute pressure of 95 kpa. when the gas is compressed to a volume of 0.5 m3, what is the new absolute pressure of the gas? (assume that there’s no change in temperature.)

J. j. thomson’s experiment disproved the theory that an atom

Along wire of diameter 1 mm is submerged in an oil bath of temperature ∞ 31°c. the wire has an electrical resistance per unit length of 0.01 ω/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kg·k, and 20 w/m·k.