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Caught in an avalanche, a skier is fully submerged in flowingsnow of density 96kg/m^3. Assume that the average density of theskier, clothing, and skiing equipment is 1020kg/m^3. What percentage of the gravitational force on the skier is offset by thebuoyant force from the snow?
A laser emits a monochromatic beam of wavelength λ, which is reflected normally from a plane mirror, receding at a speed v. What is the beat frequency between the incident and reflected light?
a heat engine operates between a hot reservoir at 950 degree celcius, what is the maximum possible efficiency
what is the absolute magnitude of the force on each charge?
A child loses his balloon, which rises slowly into the sky. If the balloon is 23 cm in diameter as the child loses it, what is its diameter at the following altitudes? Assume that the balloon is very flexible and so surface tension could be neglec..
The pitch of the sound from a race car engine drops the musical interval of a tenth when it passes the spectators. How fast is the race car moving
q1. a power supply passing throughout a resistor is supposed to deliver 22-v dc at a max current of 150ma. the
A parallel plate capacitor consists of 2 square plates 19 cm per side spaced .55 mm apart with only air between them. What is the maximum energy that can stored by the capacitor
Two satellites, A and B, are in different circular orbits about the earth. Find the ratio (TA/TB) of the periods of the satellites
High-speed stroboscopic photographs show that the head of a 250-g golf club is traveling at 52 m/s just before it strikes a 46-g golf ball at rest on a tee. Find the speed of the golf ball just after impact
The intensity of the sound wave from a jet airplane is 9.1 W/m2 at a distance of 130 m. At what rate does the jet airplane radiate energy in the form of sound waves
What average force athletes legs apply on a ground
You are on an airplane traveling 30 ° south of due west at 100 m/s with respect to the air. What is the heading of the plane with respect to the ground
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