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We sell CDs. Who sold the most CDs on the Web just before listeners began to download their favorites rather than buy CDs? Figure 10.13 graphs the shares of the market leaders in 1997 and says what percentage of all online sales they had. Does the graph fairly represent the data? Explain your answer.
Suppose a chimpanzee swings through the jungle on vines. If it swings from a tree on a 13 m long vine that starts at an angle of 45 degrees, what is the chimp's velocity when it reaches the ground.
An object moves in SHM with amplitude 4.37 m. The phase constant of the function describing its motion is 1.33 rad. What is the object's displacement at time t = 0 s?
A laser beam is traveling through an unknown substance. When it encounters a boundary with air, the angle of reflection is 24.9° and the angle of refraction is 43.0°. What is the index of refraction of the substance
A child places a picnic basket on the outer rim of a merry-go-round that has a radius of 5.0 m and revolves once every 26 s. What is the speed of a point on that rim
A particular vacuum flask has a mass of 1 kilogram and contains 1 liter of liquid water, what is the speed of the empty flask, Assume its initial velocity is zero
A Carnot-efficiency engine operating between a reservoir of liquid mercury at its melting point, What is the temperature of the colder reservoir
An electron is released near a (a) point charge, (b) an charged line of infinite length, or (c) an infinite charged plane. In which of these cases does the electron undergo constant acceleration?
The Stanford Linear Accelerator can accelerate electrons to energies of 50 GeV. What is their de Broglie wavelength? Recalling that waves can only probe structure as small as their wavelength divided by 2, what fraction of a proton’s diameter (d = 2 ..
A race car is driven at a constant velocity of 200 km/h on a straight, level track. The power delivered to the wheels is 150 kW. Compute the total resistive force on the car
A 4 kg mass is connected to a spring (k = 730 N/m) platform which undergoes simple harmonic motion in the vertical direction. The amplitude of the oscillation is 5 cm. At t=0 the box is 5 cm above the equilibrium position.
A projectile is fired with an initial speed of 65.8 m/s at an angle of 33.3? above the horizontal on a long flat firing range, Determine the total horizontal distance covered
A top loading washing machine has a spin cycle that rorates at frequency f. The spinning drum that holds the clothes has a radius R, Find an expression for the magnitude of the wall's normal force acting on the piece of clothing as the drum spins
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