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A 65.0 {\rm kg} person is put on an exercise program by a physicaltherapist, the goal being to burn up 510 food calories in eachdaily session. Recall that human muscles are about21.0 \% in converting the energy they use up into mechanicalenergy. The exercise program consists of a set of consecutive highjumps, each one 50.0 {\rm cm} into the air (which is pretty good for a human) andlasting 1.50 {\rm s}, on the average.
How many jumps should the person do persession?
How much time should be set aside for each session?
if you decrease the hanging mass by a factor of four( 0.55 kg/4) but keep the linear mass density the same, by what factor does the fundamental frequency change
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light of wavelength 671 nm is incident on a single slit. the central bright fringe is 2.60 cm wide on a flat screen
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a ships anchor chain is wrapped around a hollow steel drum of mass m 500 kg and radius r 0.5m. the drum is located on
Two rigid rods are oriented parallel to each other and to the ground. The rods carry the same current in the same direction. The length of each rod is 0.80 m, Determine the current in the rods
A beam of light in air strikes the surface of a smooth piece of plastic having an index of refraction of 1.55 at an angle with the normal of 20°. The incident light has component E-field amplitudes parallel and perpendicular to the plane of incidence..
q1. what will be the equilibrium temperature when a 223 g block of copper at 258 c is placed in the 178 g aluminium
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