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A 56.0 kg cheerleader uses an oil-filled hydraulic lift to hold four 120 kg football players at a height of 0.900m. If her piston is 19.0 cm in diameter, what is the diameter of the football players' piston? Give your answer in cm.
If a violin string vibrates at 460Hz as its fundamental frequency, what are the frequencies of the first four harmonics
Draw a free body diagram for the skateboarder at the bottom of the ramp
If you now place a pencil under the edge of the mirror nearer the wall, tilting it upward by 5.0, how much higher on the wall is the spot?
Physics two skaters with masses of 65 kg and 45 kg, respectively stand 8.0 m apart each holding one end of a rope. If they pull themslevles along the the rope until they meet explain how far does each skater travel?
A current of 12.0 mA is maintained in a single circular loop with a circumference of 3.70 m. find the magnitude of the torque exerted by the magnetic field on the loop
Two physical pendulums (not simple pendulums) are made from meter sticks that are suspended from the ceiling at one end. Determine the period of the wood pendulum
A particle moving along the x-axis has its position described by the function x =( 5.00 t3? 3.00 t+ 2.00 )m, what are the particle's position, velocity and acceleration
A doubly charged ion is accelerated to an energy of 31.5 keV by the electric field, What is the electric field strength between the plates in V/m
A string has a tension of 19.1 N. A wave travels on the string with a frequency of 65 Hz and a wavelength of 0.90 meters. What is the linear mass density of the string
Water at 22.0 °C is sprayed onto 0.203 kg of molten gold at 1063 °C (its melting point). What is the minimum mass of water that must be used
Two different electrical devices have the same power consumption, but one is meant to be operated on 120-V AC and the other on 240-V AC. What is the ratio of their currents
Force F = (6.0 N) i hat + (-9.0 N) k hat acts on a pebble with position vector r = (0.90 m) j hat + (-0.6 m) k hat, What is the resulting torque acting on the pebble about the origin
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