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A cannon with mass of 2000kg fires a 10kg shell at an angle of 60 degrees above the horizontal. if the recoil velocity of the cannon across the level ground is 0.5 m/s what is the velocity of the cannon ball?
When a stone of weight W is suspended from a scale and submerged in water the scale reads 10 kg. what is the true weight W (in kg) of the stone
A ping-pong ball of mass 4 gm and traveling with a velocity of 4 m/s collides with stationary tennis ball of mass 5 gm. Calculate the magnitude of the velocity of the tennis ball after the collision
Two particles with charges +4e and -7e are initially very far apart, which is the change in the electric potential energy
when a photoelectric surface is illuminated with f 437 nm , the stopping potential 1.67 v, what is the maimum speed of the ejected electrons
A telescope has an objective with a refractive power of 1.35 diopters, What is the angular magnification of the telescope
The length of a moving spaceship is 29.4 m according to an astronaut on the spaceship. compute the speed of the spaceship
A 12 kg mass starts from rest and slides down an inclined plane 8.0 10-1 m long in 0.9 s. What net force is acting on the mass along the incline?
A satellite with a mass of 250 kg moves in a circular orbit 7.00 multiply.gif 107 m above the Earth's surface. What is the gravitational force on the satellite
The catapult on an aircraft carrier can take an aircraft from 0 to 182 mph in 11 seconds, at which time the aircraft launches
A small light has a 1.0 V, 4.8 W bulb that is powered by a transformer concocted to a 120 V dc power source. How many turns does the primary coil have
A 5g lead bullet travelling at 370-m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet whilst the other half is transmitted to the tree, what is the increase in t..
A double speed trap is set up on a freeway. One police cruiser is hidden behind a billboard, and another is some distance away under a bridge. As a sedan passes by the first cruiser, its speed is measured to be 99.7 mph.
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