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In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm hallway. If the 2.7 kg book is pushed from rest through a distance of 0.70 m by the horizontal 32 N force from the broom and then has a speed of 1.8 m/s, what is the coefficient of kinetic friction between the book and floor?
What are the magnitude and direction of the x and y components of the electric field at the origin if there is a +2.0nC source charge located at x=1.0cm, y=0.0cm and a -4.0nC source charge located at x=0.0cm, y=-3.0cm
At what angle is the curve banked? The acceleration due to gravity is 9.8 m/s2.
A sonic depth gauge is placed 5m above the ground. Anultrasound pulse sent downward reflects off snow depth depends onthe device using the correct air temperature is 0C. How far is the surface of the snow from the device
A horizontal force of 200 N is applied to a 55-kg cart across a 10-m level surface. If the cart accelerates at m/s^2, then what is the work done by the force of friction
A 10.0g bullet is fired horizontally into a 101g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 141 N/m. The bullet becomes embedded in the block. If bullet-block system co..
Four identical charges (+1.9 ?C each) are brought from infinity and fixed to a straight line. Determine the electric potential energy of this group
An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 5.5× 104 kg, and the force causes its speed to change from 7300 to 5700m/s.
An air-track glider attached to a spring oscillates between the 12.0cm mark and the 63.0cm mark on the track. What is the maximum speed of the glider
A plate carries a charge of -3.9 µC, while a rod carries a charge of +2.2 µC. How many electrons should be transferred from the plate to the rod, so that both objects have the same charge.
A 65 kg high jumper starts his push-off phase with his center of mass .45 m above groung and velocity of 0 m/s. How much work did the mat do on the high jumper
A 56 kg pole vaulter running at 10m/s vaults over the bar. Her speed when she is above the bar is 0.7m/s. Neglect air resistance, as well as any evergy absorbed by the pole, and determine her altitude as she crosses the bar.
The average kinetic energy per molecule of an ideal gas with originally Ni=1000 molecules is Kavg=500J. What is the final number of molecules Nf after this process
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