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A sound wave propagating in air has a frequency of 4.45 kHz. Obtain the change in wavelength when the wave, initially traveling in a region where T = 27°C, enters a region where T = 11.5°C.
___________mm
Compute approximately the time the ball is in contact with the floor to be 0.04 seconds. Compute the average force the floor exerts on the ball.
A ray of sunlight is passing from diamond into crown glass; the angle of incidence is 36.00°. Determine the angle between the refracted blue and red rays in the crown glass
You drop a 12-g ball from a height of 1.5 m and it only bounces back to a height of 0.81m. What was the total impulse on the ball when it hit the floor
One end of a metal rod, which is insulated from the environment, has a length of 0.30 m and cross-sectional area 2.00 x 10-5 m2, Calculate the thermal conductivity K of the material in the rod
An 75 kg stuntman jumps from a window of a building situated 25 m above a catching net. Assuming air resistance exerts a 100-N force on the stuntman as he falls; decide his velocity now before he hits the net.
The basic function of an automobile's carburetor is to atomize the gasoline and mix it with air to promote rapid combustion
A light wave was reflected off of a mirror at an angle of15°. What was the incident angle
Two boats start together and race across a 68 km wide lake and back. Boat A goes across at 68 km/h and returns at 68 km/h. What is the average velocity of the winning boat
An iron bar of mass, 0.99 kg, slides down a frictionless incline 0.94 m high. What is the speed of the combined masses after collision
An engine performs work as a function of time (t) according to the subsequent equation: W = a*t^5, where a is a constant. Find the time dependence of output power of this engine
An ambulance moving at 37 m/s sounds its siren whose frequency is 500 Hz. What frequency does a person in the car hear as the ambulance approaches the car
as a helicopter carrying a crate takes off its vertical position as well as the crates is given as yt at3 where a is a
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