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A block of mass M= 100 kg is sliding down an inclined at an angle q= 30 degree above the horizontal. The coefficient of kinetic friction between the block and the incline is mk= 0.1. Use g = 10 m/s2.
Find the acceleration of the block down the incline.
Two horizontal forces, 218 N and 157 N, are exerted in opposite directions on a crate. What is the net horizontal force on the create? Be sure to indicate the direction of the net force. (Assume that the 218 N forces are in the positive direction.)
Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 86 kg, Determine the acceleration of the man
A 2kg ball moving east with a speed of 3m/s collides with another 3kg ball moving west with a speed of 4m/s . After the collision the two balls stick together
An 18.0 g rifle bullet travelling 245 m/s buries itself in a 3.50 kg pendulum hanging on a 3.00 m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of the pendulum's displacement.
A light beam is incident on heavy flint glass (n = 1.62) at the polarizing angle. Calculate the angle of refraction for the transmitted ray
A photon whose energy is 1.3 x 10^-14 J is scattered off an electron at an angle of 50 degrees
Kelli weighs 417 N, and she is sitting on a playground swing that hangs 0.44 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.00 m above the ground. Imagine that air resistance is negligible.
A racer starts her car from rest and accelerates at 10m/s2 for a distance of 400m (1/4mi)
If two successive overtones of a vibrating string are 420 Hz and 480 Hz, what is the frequency of the first overtone
On a day of 30 degrees celcius, full sun, how hot would a granite paver get? Will a dark grey one get much hotter than an off white coloured one.
Sam, whose mass is 80kg , takes off across level snow on his jet-powered skis. The skis have a thrust of 250N and a coefficient of kinetic friction on snow of 0.1, What is Sam's top speed
The Hall effect can be used to determine the density of mobile electrons in a conductor. Find the density of mobile electrons in the material
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