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A projectile is launched at an angle of 12.0° above the horizontal. What is its initial speed if it hits a target that is located a horizontal distance of 175 m from the launch point and 11.0 m above the launch level?
A ladder with a length of 5.0 m and a weight of 450 N is placed so its base is on the ground 4.0 m from a vertical frictionless wall, Find the magnitude of the upward normal force applied by the ground on the ladder
A silver coin has the mass of 17.75g. If the atomic mass of silver is 107.868u, how many silver atoms are in the coin
A 2.05 kg mass is attached to a light cord that is wrapped around a pulley of radius 4.65 cm, which turns with negligible friction. Find the moment of inertia of the pulley
A 10g lead bullet at 23 degrees celsius slams into a stone wall. Assuming no loss of energy to the environment, how fast must the bullet be traveling
The field of an electromagnet is given by B = 0.02 + 0.0115z2, with B in tesla and z = distance in cm from the north pole of the magnet.
A 6.0-cm-diameter cylinder of nitrogen gas has a 4.0-cm-thickmovable copper piston. The cylinder is oriented vertically, asshown in the figure, and the air above the piston is evacuated
A 2.70-cm-high object is situated 18.5 cm in front of a concave mirror that has a radius of curvature of 8.06 cm. Calculate the location and the height of the image
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 940 m/s2 What is the magnitude of the net force acting on the soccer ball at this instant
A rock climber throws a small first aid kit to another climber who is higher up the mountain. What is the vertical height between the two climbers
question1with ones eye at a height of 1 m above water level on a lake one can just see over the horizon a point on the
two people carry a heavy electric motor by placing it on a light board 2.00 m long. one person lifts at one end with a
a rectangular solid made of carbon has sides of lengths 1.0cm 2.0cm and 4.0cm lying along the xy and z axes.
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