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A 425-g softball is travelling at 18.6 m/s [214 degrees].
a) What is the momentum of the softball?
b) Determine the x-and y-components of the softballs momentum.
a proton and a alpha particle are released from rest when they are 0.225 mm apart. the alpha particle a helium nucleus
A uniform electric field exists in the region between two oppositely charged plane parallel plates. Find the magnitude of this electric field
A 92-kg fullback, running at 5.0 m/s, attempts to dive directly across the goal line for a touchdown. What is the velocity of the football players after the collision
A bicycle is moving at a speed v = 4.26 m/s. If the radius of the front wheel is 0.450 m, how long does it take for that wheel to make a complete revolution.
A child pulls a friend in a little red wagon with constantspeed. How much work does the child do on the wagon
Over a time interval of 1.92 years, the velocity of a planet orbiting a distant star reverses direction, changing from +22.2 km/s to -20.5 km/s. Find (a) the total change in the planet's velocity (in m/s) and (b) its average acceleration (in m/s2) du..
Atomic Hydrogen in the ground state absorbs a photon, raising the electron to the n=3 excited state. Determine the number of classical revolutions the electron makes during the 0.1 ns time interval
a large asteroid of mass 77100 kg is at rest far away from any planets or stars. a much smaller asteroid of mass 610 kg
In a quarter-mile drag race, two cars start simultaneously from rest, and each accelerates at a constant rate until it either reaches its maximum speed or crosses the finish line. By how many seconds does this car win the race
A man is to be released from rest on a swing pulled away from the vertical by an angle of 22.1 degree. Determine the maximum weight the man can have and not break the ropes
A 0.51 kg mass vibrates according to the equation x = 0.43 cos 8.37t, where x is in meters, and t is in seconds. (a) Determine the amplitude. m (b) Determine the frequency. Hz (c) Determine the total energy. J (d) Determine the kinetic energy and pot..
A cubic box of volume 5.1 x 10 -2m3 is filled with air at atmospheric pressure at20 degrees celcius. What is the net force on each side of the box
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