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The displacement of a wave traveling in the positive x-direction is D(x,t)=(3.5cm)sin(2.3x-134t), where x is in m and tis in s.
A 123-kg care package with a parachute is dropped from an airplane and reaches a terminal speed of 5.00 m/s. What is the rate of work done by the air resistance
A sports car moving at constant speed travels 150 m in 4.00 s. If it then brakes and comes to a stop while decelerating at a rate of 6.0 m/s2. How long does it take to stop?
A jet moving 500.0 km/h due east is in a region where the windis moving at 120.0 km/h in a direction 30.00 degrees north of east. What is the speed of the aircraft relative to the ground
three vectors length a67.0 b39.3 and c44.0. the angles are a27.7 and b54.2 and c points along the negative y-axis.
When the tips of the rotating propeller of an airplane have a linear speed greater than the speed of sound, the propeller makes a lot of noise, which is undesirable. If the length of the propeller is 2.354 m
If, instead, the floor has a coefficient of kinetic friction µk = 0.04, what is the magnitude of the frictional force on the block when the block is moving?
Suppose you carry a bag of groceries weighing 103 N from your car to your kitchen, a distance of 53 m, without raising or lowering the bag. What is the work done by the force you exert on the bag
What is the weight of the heaviest fish that can be pulled up vertically, when the line is reeled in (a) at constant speed and (b) with an acceleration whose magnitude is 1.12 m/s2?
A mass of 6 kg is moving at 31 m/s in the positive x direction. What is the magnitude of the velocity of the masses after the collision in m/s
A 45.4 kg girl is standing on a 144 kg plank. The plank, at first at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.60 m/s relative to the plank. Wha..
A ball of mass 2kg is thrown down at vi = -8m/s from a height (hi) of 2.45m. It bounces back up to a maximum height of hf = 4.9m. Assuming the system is the ball and the Earth. What is the total initial energy of the ball?
Describe a world where the opposite of Lenz's law applies, that is where the EMF or current is in the same direction to the direction that caused it .
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