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A uniformly loaded rectangular crate is released from rest in the position shown. Assuming that the floor is sufficiently rough to prevent slipping and that the impact at B is perfectly plastic, determine the smallest value of the ratio a/b for which corner A will remain in contact with the floor.
A kid fires water horizontally from a squirt gun held 1.6 above the ground. It hits other kid 2.4 away squares in the back, at a point 0.85 above the ground. What was the initial speed of the water.
A wheel 33 cm in diameter accelerates uniformly from 240 rpm to 360 rpm in 6.5 s. How far will a point on the edge of the wheel have traveled in this time
A woman stands on a scale in a moving elevator. Her massis 60.0 kg and the combined mass of the elevator and scale is anadditional 815 kg. What does the scale readduring the acceleration
Betelgeuse has a radius 650 times that of the sun and a massfifteen times that of the sun. What angle doesthe sun subtend as viewed from the earth
question a 43-kg girl is bouncing on a trampoline. during a certain interval after leaving the surface of the
an arch of 120 degrees carries a total charge of q. the radius of the arch is r ignore the thickness of the wire. what
Two equally charged particles each have a mass of 0.015kg. They are suspended by a light string with a 60 degree angle between them. find the magnitude of the repulsive electric force
A ball m=10 g is launched straight upward by a spring. The spring was initially compressed 25 centimeter by a force of 1.25 Newton. Find how high does the ball rise assuming friction is negligible
A diffraction grating produces a first order maximum at an angle of 20.0°. What is the angle of the second order maximum
You are 16.0 m from a loudspeaker, where you hear a sound intensity I0. How far must you be from the speaker to reduce the sound intensity that you hear by a factor of 5? (Hint: Assume spherical waves.)
If the electric field in an EM wave in free space has a peak magnitude of 7.5*10^-5 v/m, what is the peak magnitude of the magnetic field strength
A light ray enters a glass slab at point a at incident angle 74.1 degree and then undergoes total internal reflection at point b what minimum value for the index of refraction of the glass can be inferred from this information
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