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Two point like identical positive charges, all of mass .3 g are suspended as a pendulum and placed in the uniform electric field of a magnitude E=5*10^5 N/C directed upward. A length of a string is 30 cm. What is the magnitude of all charge?
A small moon of a giant planet has an orbital period of 1.74 days and an orbital radius of 4.02 105 km. determine the mass of the planet
At 100 °C the rms speed of nitrogen molecules is 576 m/s. Estimate the rate of molecular collisions (collisions/s) on this wall
a circus clown weighing 170 lbs. is fired from a cannon at 50 degrees above the horizontal. The clown lands in a circular net that has a radius of 15 ft. What was the initial velocity of the clown
Consider electrons accelerated to a total energy of 20.0 GeV in the 3.00-km-long Stanford Liinear Accelerator. What is the factor ? for the electrons? What is the electrons' speed at the given energy?
A 80-kg snow skier is being pulled up a 16 ° slope by a steel (Young's modulus 2.0 x 10^11 N/m2) cable. The cable has a cross-section area of 7.0 x 10^-5 m2. what is the original (unstretched) length of the cable
A long wire is known to have a radius greater than 5.6 mm and to carry a current that is uniformly distributed over its cross section, What is the radius (in mm) of the wire
A house at the bottom of a hill is fed by a full tank of water = 6.50 deep and connected to the house by a pipe that is = 130 long at an angle of = 61.0 from the horizontal. Find out the water gauge pressure at the house.
At its Ames Research Center, NASA uses its large "20-G" centrifuge to test the effects of very large accelerations (hypergravity) on test pilots and astronauts. In this device, an arm 8.84m long rotates about one end in a horizontal plane, and the..
in an old fashion amusement park ride passengers stand inside a 3.0m tall5.0m diameter hollow steel cylinder with their
An object is placed 20 cm from a concave mirror of radius 19 cm. What is the magnification of the mirror
Two crewmen pull a boat through a lock. One crewman pulls with a force of F1 = 130 N at an angle of = 37° relative to the forward direction of the raft.
A student sits on a rotating stool holding two 3.0 kg objects. When his arms are extended horizontally, Find the new angular speed of the student
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