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starting from rest, a 4.0-kg crate of cell phones reaches a horizontal speed of 8.0 m/s in 2.0 s. What is the net force acting on the crate?
question1a square membrane with sides of length l uniform mass density per unit area sigma and uniform surface tension
You pull your little sister across a flat snowy field on a sled. Your sister plus the sled have a mass of 31 kg. The rope is at an angle of 30 degrees to the ground. As you pull with a force of 30 N, the sled travels a distance of 45 m.
Pat builds a track for his model car out of wood. The track is 14.00 cm wide, 3.00 m long, Locate the horizontal coordinate of the center of gravity of this track
A 11.9-m-long wire of mass 132g is stretched under a tension of 250N . A pulse is generated at one end, Where will the two pulses first meet
Two loudspeakers are mounted on a merry-go-round whose radius is 9.01 m. When stationary, What is the beat frequency that is detected by the listener when the merry-go-round is near the position shown
when a dime (diameter 1.624 cm) is placed straight over it, bubble can be seen by looking down into the cube. What are upper and lower bounds of the range of the possible depths of the air bubble beneath surface.
find the ratio of vb to vr, where vr is defined above and vb is the boats speed with respect to the water.
A homogeneous disk of radius R and mass M rolls without slipping on a horizontal surface and is attracted to a point a distance d below the plane. find the frequency of oscillations around the position of equilibrium
An ideal gas initially at pressure 8.0 atm and temperature 300K expands adiabatically until its volume doubles. Find the final pressure and temperature
Now a peg is placed 4/5 of the way down pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its starting po..
A fireman d = 46.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of θi = 38.0°, at what height will the stream of water strike the building
When it rains water vapour in the air condenses into liquid water and energy is released. How much energy is released when 0.0244m of rain falls over an area of 2.59 x 10^6 m^2? If the average energy needed to heat one home for a year is 1.40 x 10^11..
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