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An arrow is fired with a speed of 17.0 m/s at a block of Styrofoam resting on a flat surface. The arrow penetrates a certain distance into the block before coming to rest relative to it. During this process the arrow's deceleration has a magnitude of 1700 m/s2 and the block's acceleration has a magnitude of 450 m/s2
Find how long does it take for the arrow to stop moving with respect to the block?
A 64-kg runner rounds a circular track of radius 63.7 m at a constant 5.30 m/s. Find the magnitude of her momentum changes after she has gone one-fourth of the circle
A sound wave from a police siren has an intensity of 116.9 W/m2 at a certain point; What is the intensity level of the sound wave due to the ambulance
An elastic cord vibrates with a frequency of 3.0 Hz when a .60 kg mass hangs from it. What would its grequency be if .38 kg hang from it?
a light ray is incident upon a plane interface between two materials. the ray makes an incident angle with the normal
The speaker and two microphones shown in the figure are arranged inside a sealed container filled with neon gas. What is the speed of sound in neon gas
A classroom window made of glass is 1cm thick. The window is 2m square . If the thermal conductivity of glass k = 0.96 w/(mK) and the temperature is 21C inside and 32C outside, find the head flux and the temperature distribution along the thicknes..
The velocity of the car at the end of the fifteen-second period is +20.6 m/s. The ratio of the average acceleration values is a1/a2 = 1.50. Find out the velocity of the car at the end of the initial ten-second interval.
At a dock, a crane lifts a 2094 kg container 14 m, swings it out over the deck of a freighter, and lowers the container into the hold of the freighter, How much work is done by the crane on the container?
A horizontal force of 150 N is used to push a 42.5 kg packing crate a distance of 6.90 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following. the work done by the 150 N force
A solid, uniform ball of mass 14.3 kg , and radius 0.21m , rolls without slipping up a hill of height 29.4m , How long is the ball in the air
A circular wire of radius 5.67 cm has a current of 3.27 A flowing in it. The wire is placed in a uniform magnetic field of 4.39 mT. Determine the maximum torque on the wire
Coherent light with wavelength 601 passes through two very narrow slits, and interference pattern is observed on a screen a distance of 3.00 from the slits.
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