Total distance travelled by the wave
The wave is travelling to the right at 50.0 m/s. What is the amplitude if the maximum displacement is 38.0 cm and the total distance travelled by the wave is 16.0 m?
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A chair of weight 140N is sitting on the horizontal floor; the floor is not frictionless. You push on the chair with a force = 38.0 N that is directed at an angle of 38.0 below the horizontal and the chair slides along the floor. Using Newton's la
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A transformer operating from 91 V (rms supplies a 8.1 V lighting system for a garden. Eight lights, each rated 34 W, are installed parallel. Find the equivalent resistance of the system.
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The craft has velocity components of vx = 3630 m/s and vy = 4634 m/s. Find the magnitude and direction of the initial velocity. Express the direction as an angle with respect to the +x axis.
In hydrogen, the transition from level 2 to level 1 has a rest wavelength of 121.6 nm. Suppose you see this line at a wavelength of 120.5 nm in Star A and 121. 2 nm in Star B. Calculate each star's speed, and state whether it is moving toward or a
A child is sliding on a sled at 1.6 {rm m/s} to the right. You stop the sled by pushing on it for 0.80 {rm s} in a direction opposite to its motion.If the mass of the child and sled is 40 {rm kg}, what average force do you need to apply to stop th
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