Physics, 04.02.2020 04:57 pollywallythecat
Agolf ball of mass m = 0.21 kg is dropped from a height h. it interacts with the floor for t = 0.115 s, and applies a force of f = 16.5 n to the floor when it elastically collides with it.
write an expression for the ball's velocity, v, just after it rebounds from the floor. (hint: the fact that the collision is elastic is important when solving this problem.) use only t, f, m
Answers: 2
Physics, 22.06.2019 21:40, iancuteodora30
Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.
Answers: 1
Physics, 23.06.2019 05:00, sandram74691
City b is south of city a, and the 200 mile trip by car takes 4 hours. the cities are 120 miles apart in a straight line. what is the velocity of a trip from city a to city b?
Answers: 2
Agolf ball of mass m = 0.21 kg is dropped from a height h. it interacts with the floor for t = 0.115...
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