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A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1000 Hz. The bird-watcher, however, hears a frequency of 1015 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
An elevator with a mass 2000kg rises with an acceleration of 1m/s^2. What is the tension in the supporting cables
A vessel whose walls are thermally insulated contains 2.5 {rm kg} of water and 0.6 {rm kg} of ice, all at a temperature of 0.0 ^circ {rm{C}}. The outlet of a tube leading from a boiler in which water is boiling at atmospheric pressure is inserted ..
A satellite with a mass of 750 kg is in orbit around the earth. It is initially located at the altitude (measured from the earth's surface) of 2.12 x 106 m. It is then moved into a new orbit, with an altitude of 4.25 x 10^6 m (again, measured from..
The frequency and wavelength of a transverse wave on a string are 340 Hz and 0.70 m, respectively. What is the linear density of the string
A 3.2 kg block of wood sits on a table. A 3g bullet, fired horizontally at a speed of 490 m/s, goes completely through the block, emerging at a speed of 250m/s. What is the speed of the block immediately after the bullet exits.
what is the depth d. what is the angle of refraction.
Electrons are ejected with a maximum velocity of 5.1 x 105 m/s from a metal when illuminated by photons with a wavelength of 440 nm. calculate The energy of the incident photons
An air-track glider attached to a spring oscillates between the 12.0cm mark and the 61.0cm mark on the track. find maximum speed of the glider
A 58 g tennis ball is served at 40 m/s. Find the de Broglie wavelength of the tennis ball
radial acceleration of the tip of the second hand of a clock is 0.0021 m/s^2 what is the length of the second hand
A ?ghter plane ?ying at constant speed 420 m/s and constant altitude 10000 m makes a turn of curvature radius 2800 m. On the ground, the plane's pilot weighs (62 kg)(9.8 m/s2) = 607.6 N. W
A small sphere with a charge of -5.9 10-7 C is placed in a uniform electric field of magnitude 1.9 106 N/C pointing to the west. What is the magnitude and direction of the force on the sphere due to the electric field?
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