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A 740g, 40cm long rod is free to rotate about a frictionless axle at one end. While at rest, the rod is given a short but sharp 1000N hammer blow at the center of the rod, aimed in a direction that causes the rod to rotate on the axle. The blow lasts a mere 2.5ms. What is the rod's angular velocity immediately after the blow?
A 7.10-kg box is sliding across the horizontal floor of an elevator. Determine the kinetic frictional force that acts on the box
The position of an object as a function of time is (3.2t + 1.8t^2)i + (1.7t + 2.4t^2), Find the magnitude and direction of the object
State Newton's three laws of Motion and What is the difference between elastic collision and inelastic collision
Kahlinium is an H-like atom consisting of an electron and the positive Casimir particle, what would be the wavelength of the first line of the Lyman emission series for this atom
A 160 m wide river flows due east at a uniform speed of 4.05 m/s. A boat with a speed of 7.2 m/s relative to the water leaves the south bank pointed in a direction 39o west of north. What is (a) magnitude and (b) direction of the boat's velocity r..
A 1300-kg car moving on a horizontal surface has speed v = 55km/h when it strikes a horizontal coiled spring, What is the spring stiffness constant of the spring
A block of the same weight as the meter stick is suspended from the stick, as shown, at a distance x from the wall. What is the minimum value of x for that the stick will remain in equilibrium.
An electron traveling horizontally to the right enters a region where a uniform electric field is directed downward. What is the direction of the electric force exerted on the electron once it enters the electric field? A. to the left B. to the ri..
Suppose he enters the water at a speed of 16.0 m/s via path 1. Explain how fast is he moving on path 2 when he releases the rope at a height of 4.00 m above the water? Ignore the effects of air resistance.
A frictionless pulley has the shape of a uniform solid disk of mass 6 and radius 25 . A 1.90 stone is attached to a very light wire that is wrapped around the rim of the pulley.
A person is riding a bicycle, and its wheels have an angular velocity of 12.1 rad/s. What is the anguar acceleration (in rad/s2) of each wheel
An empty rubber balloon has a mass of 0.0120kg. The balloon is filled with helium at 0oC, 1atm pressure, and a density of 0.179kg/m3, What is the magnitude of the buoyant force acting on the balloon
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