Earth has an equatorial radius of approximately 6380 km, and it rotates 3600 every 24 hrs. What is the angular displacement of a person standing at the equator for 3.0 hrs?

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?

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.