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A transverse wave is propagated in a string stretched along the x-axis. The equation of the wave, in SI units, is given by: y = 0.006 cos π (46t - 12x). What is the frequency of the wave in SI units?
A man stands on the roof of a 19.0 -tall building and throws a rock with a velocity of magnitude 30.0 at an angle of 42.0 above the horizontal. Calculate the horizontal distance from the base of the building
A 132- (including all the contents) rocket has an engine that produces a constant vertical force (the thrust) of 1930. Find the acceleration of the rocket
a child and a sled with a combined mass of 50 kg slide down a frictionless slope. what is the height of the hill
A 5.0kg block is put on top of a 7.0kg block. To cause the top block to slip on the bottom one, while the bottom one is held fixed, Find the resulting acceleration of the blocks
a 5 mf capacitor and a 9 mf capacitor are connected in parallel to a 60 hz generator operating with an rms voltage of 120 v
An elevator is accelerating upward at 1.8m/s^2. Someone is standing on a bathroom scale in the elevator, and it reads 180lb. calculate the person's true weight
What are the magnitude and direction of the x and y components of the electric field at the origin if there is a +2.0nC source charge located at x=1.0cm, y=0.0cm and a -4.0nC source charge located at x=0.0cm, y=-3.0cm
a motor scooter trsvels east at a speed of 12 m/s. The driverthen reserves direction and heads west at 15 m/s. What is the change in velocity of the scooter? (answer in magnitude anddirection)
Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 29.2 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kPa. Pa (b) What force is exerted by the water on the window of an..
How much time is necessary to catch the car
A speedboat moving at 33.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of ?3.20 m/s2 by reducing the throttle. (a) How long does it take the boat to reach the buoy? (b)What is the velocit..
A child playing tee ball hits a stationary 65 g ball with a 200 g bat swinging initially at 4.0 m/s. What's the bat's post-impact speed
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