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A race car starts from rest on a circular track of radius 690 meter. The car's speed increases at the constant rate of 0.400 m/s2. At the point where the magnitudes of the centripetal and tangential accelerations are equal, determine the following.
(a) The speed of the race car
m/s
(b) The distance traveled
m
( c) The elapsed time
s
Find the resonance frequency of the ear canal, Treat it as a half-open pipe of diameter 8 mm and length 26.7 mm
Electrons are ejected from a certain metallic surface with speeds ranging up to 4.2 105 m/s when light with a wavelength of ? = 615 nm is used. What is the work function of the metal?
Light of wavelength 630 nm passes through a grating and then onto a screen located several meters from the grating. Determine the wavelength of the second source
One lens of a near sighted man's eyeglasses has a focal length of-23.0 centimeter, and the lens is 2.1 centimeter from the eye. evaluate the focal length of the corresponding contact lens
Water runs out of the horizontal drainpipe at the rate of 120 liters per minute. It falls 3.20 m to the ground. Assume the water doesn't splash up, what average force does it exert on the ground? (1 liter = 1 kg.)
A turbine in an electric power plant rotates at 3600 rpm. Discover its angular speed in radians/second, and decide the linear speed of a point 72cm from the axis of rotation. The power plant shuts down, and the turbine coast to a halt in 590s. If the..
An eagle is flying horizontally at 5.7 m/s with a fish in its claws. How much time passes before the fish's speed doubles
One particle has a mass of 4.41 x 10-3 kg and a charge of +6.92 ?C. A second particle has a mass of 6.52 x 10-3 kg and the same charge. Find the initial separation between the particles
a 45-kg crate is placed on an inclined ramp. when the angle the ramp makes with the horizontal is increased to 30 ?
a large reel of paper installed at the end of a paper machine. d1 2m j 1000kgm2 n1 60rpm tension on paper 1000n.
A spring is first stretched 2.0 cm from its unstressed length. It is then stretched extra 1.8 cm. How does the work needed for the second stretch compare to the work required for the first stretch (give a ratio of second to first)?
A car misses a turn, sinks into a shallow lake, coming to rest on its side with the door horizontal and at a depth of 9.3 m. find the force exerted on the inside of the door by the air
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