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Consider a bike moving with a speed of 0.80 past a stationary person. If the rider fires an object in the direction in which he is moving with a speed of 0.70 relative to himself, determine the speed of the ball relative to the stationary person.
question a 16 g ball of clay traveling east at 3.4 ms collides with a 30 g ball of clay traveling north at 2.0 ms. what
A loudspeaker emits energy at the rate of 53W, What is the intensity of sound 19m from the speaker
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 49.0. What is the magnitude of the gravitational acceleration on this planet
While in church, Peter notices a lamp hung by a light chain to the ceiling. Peter counts 85.0 cycles in 592 seconds. How high is the ceiling above the lamp
A cylindrical conducting shell of radius ρ = 4 millimeter and negligible thickness forms the inner conductor of a coaxial line. Find the magnitude of the force acting to split the outer cylinder apart longitudinally
A toaster uses a nichrome heating wire. When the toaster is turned on at 20 degrees Celsius, the initial current is 1.5 amps. a few seconds later the toaster warms up and the current now has a value of 1.3amps.
A light pulse emitted by the rocket travels toward the mirror and is reflected back to the rocket. The front of the rocket is a distance 1.88 10 ^12 m from the mirror (as measured by observers in S) at the moment the light pulse leaves the rocket...
A variable-speed drill, initially turning at 400 rpm, speeds up to 1300 rpm in a time interval of 1.0 s. What is its average rotational acceleration
The wavelength of violet light is about 430 nanometers, or 4.30 10-7 m. The frequency of the violet light reflected from a metal surface and thefrequency of the vibrating electron that produces it are the same.What is this frequency?
A sled weighing 59.0 N is pulled horizontally across snow so that the coefficient of kinetic friction among sled and snow is 0.100. A penguin weighing 71.0 N rides on the sled, as in the figure below. If the coefficient of static friction among pengu..
A block with mass m = 5.00 kg slides down a surfaceinclined 36.9 to the horizontal (see figure below). The coefficientof kinetic friction is 0.22. A stringattached to the block is wrapped around a flywheel on a fixed axisat O.
The light from a distant star takes 252 years to reach the earth. How far away is the star from the earth
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