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How far could you pedal a bicycle at 15 km/hr on the energy in 3.0 gal of gas? ( 1 gal of gas has a mass of 3.2 kg.) Assume a 68 kg person and that the heat of combustion for gas is 44 MJ/kg.
You perform a double-slit experiment in order to measure the wavelength of the new laser that you received for your birthday. What is your laser's wavelength expressed in nanometers
A current of 2.50 A passing through a heating coil immersed in 180 g of paraffin (specific heat capacity 2.00 jg^-1K^-1) raises the temperature from 5 c below room temperature to 5 c above room temperature in 100 seconds
A worker drags a 150lb. crate across the floor by pulling on a rope inclined at 17degrees above the horizontal. What tension in the rope is required to start the block moving
A 1055-kg van, stopped at a traffic light, is hit directly in the rear by a 790-kg car traveling with a velocity of +2.15 m/s. What is the final velocity of each vehicle?
A 4.1 kg ball oscillates with a period of 2.6 seconds, and an amplitude of 23. cm. What is the maximum acceleration
Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.18x1011 meter apart. Find what is the mass of the smaller star
a 2.50 muf capacitor is charged by a 12.0- battery. it is disconnected from the battery and then connected to an
A child of mass m rides on a Ferris wheel . The child moves in a vertical circle of radius13.8 m at a constant speed of 3.30 m/s. Calculate the magnitude of the force on the child
A microscope has an objective lens with a focal length of 11.0 mm . A small object is placed 0.60mm beyond the focal point of the objective lens. What is the magnification of the real image
A roller coaster car has a mass of 500 kg loaded with passengers. The car passes over a hill of radius 15m, What is the force of the track on the car at the top of the hill
A thin wire is bent into a semicircle, having a radius of curvature equal to 6.40 cm. What is the potential at the center of curvature?
An 82.5 kg fullback moving east with aspeed of 5.4 m/s is tackled by a87.0 kg opponent running west at3.28 m/s, and the collision is perfectly inelastic. Calculate the decrease in kinetic energy during the collision.
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