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An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. He was supposed to travel due north for 4.8 km, but when the snow clears, he discovers that he actually traveled 7.8 km at 45° north of due east.
(a) How far must he now travel to reach base camp?
(b) In what direction must he travel?
Ice water is heated to boiling in a 500mL beaker. The beaker's temperature from 0°C to 100°C. What is the change in volume of the beaker
the speed of sound in the air inside a 0.640-m long gas column is 340 ms. what is the fundamental resonant frequency of
Jane and John, with masses of 51 kg and 66 kg, correspondingly, stand on a frictionless surface 13m apart. John pulls on a rope that connects him to Jane, giving Jane an acceleration of 0.9m/s2 toward him.
The coefficient of static friction
A 15 kg lawn mower is pushed with a constant force of 30.0 N at an angle of 37.0 degrees. What is the acceleration of the lawn mower
For the third circuit, consisting of a single battery and two light bulbs in parallel, what is the total resistance of the circuit if each light bulb has a resistance of 7.7 ohms? What is the current through each bulb
In an adiabatic centrifugal compressor atmospheric air at 15 degree Celsius is compared to 600kPa pressure. Find the specific compression work and the efficiency of the compressor
The largest moon of Pluto, Charon, was discovered in 1979. Charon is in a circular orbit of radius 19,600 km around Pluto, What is the total mass of the Pluto-Charon system
A softball pitcher rotates a 0.250 kg ball around a vertical circular path of radius 0.4 m before releasing it. what is its speed upon release
A shell, fired from a cannon, has a muzzle speed (the speed as it leaves the barrel) of 800 ft/s. The barrel makes an angle of 45o with the horizontal and, for ease; the barrel opening is assumed to be at ground level.
a uniform rod of mass 2m is completely free to move and is initially at rest. a particle of mass m hits one of its ends
A car manufacturer claims that you can drive their new vehicle across a hill with a 47 slope before the vehicle starts to tip. how high is its center of gravity
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