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A 4-kg ball is traveling in a circle with a radius of 2.5 m at a constant speed of 10 m/s. Determine the centripetal force applied to the ball.
n 1730 kg car stopped at a traffic light is struck from the rear by a 865 kg car. The two cars become entangled, what is the change in kinetic energy
Two skaters, a man and a woman, are standing on ice. Neglect anyfriction between the skate blades and the ice. The mass of the manis 95 kg, and the mass of the woman is 63 kg. The woman pushes onthe man with a force of 55 N due east.
Two astronauts of equal mass 76 kg are holding on to opposite ends of a straight rope in space. The length of the rope between them is 18 meters. What is the new angular velocity of the two astronauts
For safety in climbing, a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. Whilst supporting a 96-kg climber, the rope elongates 1.4 m. Find its Young's modulus.
Infrared light of wavelength 2.6 mm illuminates a 0.27-mm-diameter hole. What is the angle of the first dark fringe in degrees
A circular loop of wire of radius 0.50 meter is in a uniform magnetic field of 0.30 T. The current in the loop is 2 Amp. Find what is the magnetic torque
A chair of weight 85.0N lies atop a horizontal floor; the floor is not frictionless. Using Newton's laws, calculate n, the magnitude of the normal force that the floor exerts on the chair
Heavy rains have flooded your professor's basement to a depth of 6 cm. This basement is 12 m by 10 m in area. find the speed of the stream of water leaving the hose
when boiling water a hot plate takes an average of 464 seconds to boil 110 milliliters of water. assume the temperature
Three equal blocks connected by ideal strings are being pulled along a horizontal frictionless surface by a horizontal force F. Obtain what is the magnitude of the force
A wheel with a moment of inertia of 20 kg m2 initially rotates freely with an angular velocity of 10 rad/s. A pad is applied to the outer surface to stop it. If it takes 10 seconds to stop, what is the torque due to friction?
A mass hangs on the end of a massless rope. The pendulum is held horizontal and released from rest. When the mass reaches the bottom of its path it is moving at a speed v = 2.4 m/s and the tension in the rope is T = 15.1 N.
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