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1. A 65.0 kg object slides down a 30o angle slope from rest at a height of 15.0 m. The coefficient of kinetic friction between the object and the slope surface is 0.15.
(A) What is the object's speed at the bottom of the slope?
(B) If the object continues to slide on the level ground after reaching the bottom, and if the ground's coefficient of friction is the same as the slope, how far will the abject move before stopping?
A bicycle tire pump has a piston with area 0.44 in. If a person exerts a force of 30lbs on the piston while inflating a tire, what pressure does this produce on the air in the pump.
In a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 530nm, What is the work function of this material
A wheel free to rotate about its axis that is not frictionless is initially at rest. A constant external torque of +60 N·m is applied to the wheel for 18 s, Find the moment of inertia of the wheel.
An object is located to the left of a convex lens whose focal length = +40cm. The magnification produced by the lens = 3.0 m. Calculate the distance through which the object must be moved
A 1100 car traveling at a speed of 40 skids to a halt on wet concrete where = 0.50. How long are the skid marks.
He would like a prescription for contact lenses to serve the same purpose. What is the exact contact lens prescription, in diopters.
You lower a weight of metal in a beaker filled with water standing on a scale. When metal weight hangs above the water weighs 179.6 grams.
A 45.0 kg person, standing 1.3 m from the axis, begins to run on the disk in a circular path and has a tangential speed of 2.80 m/s relative to the ground. Find out the resulting angular speed of the disk (in rad/s)
Two tiny conducting spheres are identical and carry charges of -16.6C and +56.3C, Determine the magnitude of the force that each sphere now experiences
Two point charges 0.606 m apart experience a repulsive force of 0.368 N. The sum of the two charges equals 1.08 10-5 C
one end of a uniform beam of 222N is hinged to a wall, the other end is supported by a wire that makes angles of 30 with both wall and beam, find out the tension in the wire and horizontal and vertical componentes of the force od the hinge on the ..
Find out the magnitude of the centripetal force.
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