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A person pushes a 14.0-kg lawn mower at constant speed with a force of F=88.0 N directed along the handle which is at an angle of 45.0 degrees to the horizontal.
- Calculate the normal force exerted vertically upward on the mower by the ground.
- Calculate the kinetic friction coefficent
If he struck a ball with the a speed and launch angle that would result in a maximum 120m horizontal range on Earth, how far would it go?
Calculate the direction, magnitude and line of action of the vertical and horizontal components of hydrostatic force acting on a surface.
A block of mass m = 353 g is dragged with a string across a rough horizontal table. What is the power supplied by the force of friction
A uniform, cylindrical pulley of mass M=12.7 kg and radius R=0.636 m rotates freely about a fixed horizontal axis. obtain the magnitude of the angular acceleration of the pulley
What Current densities would produce the vector potentials A = ks^n in the phi direction (where k is constant and n is integer) in cylindrical coordinates? Are there any n values which cannot be connected to a current density?
What is the de Broglie wavelength of an object with a mass of 1.3 kg moving at a speed of 2.3 m/s? (Useful constant: h = 6.63×10-34 Js.)
A model rocket is fired upward. The rocket's average initial acceleration is 40.5 m/s2 until the fuel burns out in 0.805 s. How high does the rocket go
A charge of -3.55 nC and a charge of -5.65 nC are unconnected by a distance of 60.0 cm. Find the position at which a third charge of +7.20 nC can be located so that the net electrostatic force on it is zero.
A tennis player receives a shot with the ball of mass 0.058kg travelling horizontally at v=45 m/s and returns the shot with the ball travelling horizontally at 51 m/s in the opposite direction.
A small glass bead has been charged to +30.0nC. A metal ball bearing 1.30cm above the bead feels a 1.90×10?2N downward electric force. What is the charge on the ball bearing?
An electron is released from rest at the negative plate of a parallel plate capacitor. How fast is the electron moving just before it reaches the positive plate
The distance from the center of the breastbone to a man's hand, with the arm outstretched and horizontal to the floor, is 1.39 m. The man is holding a 12-kg dumbbell, oriented vertically, in his hand, with the arm horizontal. What is the torque due t..
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