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A 50 kg crate is at rest on a level surface the coefficients of friction are 0.3 and 0.4,what is the normal force acting on the crate, a man begins pushing horizontally on the crate how much force must the man exert to start the crate moving, how much force must the man exert to keep the crate moving once it is already in motion, how fast would the crate be moving if he applied that force for 5 seconds, what distance would the crate have covered during that 5 second interval.
When its coil rotates at a frequency of 258 Hz, a certain generator has a peak emf of 72 V. What is the peak emf of the generator
You throw a ball upward with an initial speed of 4.51 m/s. When it returns to your hand 0.92 s later it has the same speed in the downward direction, What was the upward component of the average acceleration
a rock is dropped from rest from a height h above the ground. it falls amp hits the ground with a speed of 11ms. from
an ice block mass m 11.0 kg is attached by a rope to a wooden box of mass m 16.0 kg. the coefficient of kinetic
A particular star is 2.34x1014 km from the earth. Approximately how long does it take the light from the star to reach earth
consider a square conducting pipe. the length l is much larger than the dimension of the cross section which is a
Two canoes are 10m apart on a lake. Each bobs up and down with a period of 4.0s. When one canoe is at its highest point, the theory canoe is at its lowest. Both canoes are always within a single cycle of waves. Decide the speed of the waves.
A child in a boat throws a 5.20 kg package out horizontally with a speed of 10.0 m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 26.0 kg and that of the boat is 40kg.
A pump is used to empty a 4800 L. wading pool. The water exits the 3.0-cm-diameter hose at a speed of 2.0 m/s
What is the potential at the fourth corner (point A)? Express your answer in terms of the variables Q, L, and the Coulomb's constant k.
A 100 gram ball of clay is thrown horizontally with a speed of 10 meter per second towards an 880 gram block resting on a frictionless surface. Evaluate what is the speed after the collision
Light from an argon laser strikes a diffraction grating that has 5306 lines per centimeter. Determine the wavelength of the laser light
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