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A machine gun, of mass 35.0 kilogram, fires 50.0-g bullets, with a muzzle velocity of 750 m/s, at the rate of 300 rounds per minute. Find the average force exerted on the machine gun mount?
A race track is to have a banked curve with radius250 m. What should be the angle of the bank if the normal force alone is to allow safe travel around thecurve at 59.5 m/s
A bullet with mass m = 5.21 g is moving horizontally with a speed v = 373 m/s when it strikes a block of hardened steel with mass M = 14.8 kg, What was the change in kinetic energy (J) of the bullet
A 40 turn coil of radius 5.4 cm rotates in a uniform magnetic field having a magnitude of 0.49 T. find the magnitude of the maximum torque exerted on the coil
A total of 8.07·106 electrons are placed on an initially uncharged wire of length 3.77 m. What is the magnitude of the acceleration of a proton placed at that point in space
A 2 kg mass dropped 2.0 m above a spring with a spring constant of 40.0 N/m. How much does the spring compress
Some of the first "microscopes" were really single-lens magnifying glasses made by Leeuwenhoek. These devices had magnifications as high as 200.
25% of a radioactive material stays active after 4 hours. What is the half-life of this radioactive material
Bored, a boy shoots his pellet gun at a piece of cheese that sits, keeping cool for dinner guests, on a massive block of ice. obtain the coefficient of friction between the cheese and ice
A 245 kg person lays on board that is supported only on the ends and that has a mass of 12.0 kg. what is the force on either side where the board is supported
Sound is passing perpendicularly through an open window whose dimensions are 1.1 m x 0.75 m. How much sound energy comes through the window in one hour
a deuteron particle the nucleus of an isotope of hydrogen consisting of one proton and one neutron and having a mass of
A doubly charged helium atom whose mass is 6.6 ×10?27kg is accelerated by a voltage of 2700V, What is its period of revolution
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