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A 62.1 kilogram skier coasts up a snow-covered hill that creates an angle of 23.1 degree with the horizontal. The initial speed of the skier is 8.90 m/s. After coasting a distance of 2.07 meter up the slope, the speed of the skier is 3.35 m/s. Find the work done by the kinetic frictional force that acts on the skier.
the picture tube in an old black-and-white television uses magnetic deflection coils rather than electric deflection
The initial distance of the helium nucleus from the gold nucleus is very large
An AC voltage of the form ?v = 100 sin 1 000t, where ?v is in volts and t is in seconds, is applied to a series RLC circuit. Assume the resistance is 350 ?, the capacitance is 5.20 µF, and the inductance is 0.500 H. Find the average power delivered t..
at the top of a hill with slope angle 25 degrees a snow sled is moving at 5 ms. the sled travels 30 m down the hill
A person lies flat on the sidewalk with her ear to the ground. A limb falls and two distinct sounds are heard, one from the air and the other from the concrete. How far away did the impact occur
An ideal gas at 24.6°C and a pressure 1.60 105 Pa is in a container having a volume of 1.00 L. Determine the number of moles of gas in the container
A child sits in a wagon with a pile of 0.403 kg rocks. If she canthrow each rock with a speed of 11.7 m/s relative to the ground, how many rocks must she throw
A uniform solid disk, with a mass of 2.0 kg and 20 cm in diameter, is rotating about an axis through its center at 200 rpm. Calculate the final angular velocity of the combination
A 54 kg bicyclist rides his 9.1 kg bicycle with a speed of15.3 m/s. What is the magnitude of the braking force
A person who weighs 605 N is riding a 98-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 890000 Pa, what is the area of contact between each tire and the gr..
A red line (? = 630 nm) in the third order overlaps with a blueline in the fourth order for a particular diffraction grating. What is the wavelength of the blue light
Reading glasses of what power are needed for a person whose near point is 110cm, so that he can read a computer screen at 52cm? suppose a lens-eye distance of 2cm.
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