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A frictionless ramp is constructed so that it is at a 30 degree angle to the horizontal. It is 1.8 meters long and 0.9 meters high. A 4 kg block is released at the top of the ramp and slides down onto a frictionless horizontal surface where it hits and sticks to another block that has a mass of 5 kg. After the blocks travel some distance, the blocks come to a rough patch that has a coefficient of friction of 0.20 between the blocks and the rough surface. How far along the rough patch do the blocks go before stopping?
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. Find the force acting on the electron as it revolves in a circular orbit of radius 5.34 10-11 m
Mercury has a mass MP = 3.18 x 1023 kg, an orbital period T = 88.0 days, Find the total energy (potential and kinetic) of Mercury in its orbit about the Sun
A wire has a diameter of 1.74 mm and a length of 37 m, What is the resistivity of the wire?
A 5,100-kg truck runs into the rear of a 1,000-kg car that was stationary. What was the speed of the truck before the collision
An unknown nucleus has twice the volume of a nucleus with 83 nucleons. What is the atomic mass number of the unknown nucleus
A roughly spherical volume of rock 2.1 km in radius is 30% denser than the surrounding rock, calculate the gravitational acceleration it produces at Earth's surface
Two people with a combined mass of 134 kg hop into an old car with worn-out shock absorbers. This causes the springs to compress by 9.00cm. Find the total load supported by the springs
A binary system consists of stars of masses m and 2m, separated by a distance L=3.00×1011 m. What is the centripetal acceleration of the other star
After a spacewalk, a 2.33-kg tool is left 58.9 m from the center of gravity of a 40.1-metric ton space station, orbiting along with it. How much closer to the space station will the tool drift
If you wrapped a wire 1000 times around a hollow cylinder that was 10 cm long, and forced 4.0 amps of current through this solenoid, what would the strength of the magnetic field be
A charged particle enters a uniform magnetic field and follows the circular path shown in the drawing. Determine the mass of the particle
A vessel at rest at the origin of an xy coordinate system explodes into three pieces. Just after the explosion, one piece, of mass m, moves with velocity, what is the magnitude of the velocity of the third piece
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