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A block rests on a horizontal, frictionless table. It is attached to a spring and set into motion. The picture above shows snapshots of the block at 5 different labelled locations during the motion. The two extreme locations (Points B and C) represent the two extremes of the motion of the block. Point E represents the equilibrium position. Evaluate each statement below with the following:
PositiveZeroNegative
1. The kinetic energy of the block at location B is ____.
2. The kinetic energy of the block at location E is ____.
3. The potential energy of the spring at location D is ____.
4. The kinetic energy of the block at location D is ____.
5. The potential energy of the spring at location E is ____.
A 28.4kg beam is attached to a wall with a hinge and its far end is supported by a cable. what is the horizontal component of the force exerted by the hinge on the beam
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A tight rope walker who weighs 640 Newton walks along a steel cable. Calculate the cross-sectional area of the cable
A rocket is fired at a speed of 82.0 m/s from ground level, at an angle of 31.0 ° above the horizontal. find By how much does the rocket clear the top of the wall
A ladder of weight 200N and lenght 10 meters leans against a smooth wall (no friction on wall). A firefighter of weight 600N cimbs a distance x up the ladder. The coefficient of friction between the ladder and the floor is 0.5.What is the max valu..
Two sides of a triangle are 16.9 cm and 29.5 cm, with tehincluded angle 113o. What is the length of the thirdside? Answer in units of cm. What is the angle opposite the side16.9 cm? Answer in units of o.
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A cart of mass 320 gram is located on a frictionless horizontal air track. Determine the period at which it oscillates
Two circular hoops, with masses and radii in the ratios m2/m1=4 and R2/R1=4, rotate with angular speeds in the ratio ?2/?1=2. What is the ratio of the kinetic energies K2/K1
A particle with a positive charge q= 8.6x10^-6C and a mass m= 0.45g moves with velocity v = 8m/s parallel to a wall. Find the sign and magnitude of the magnetic field
A hot-air balloonist, rising vertically with a constant velocity of magnitude = 5.00m/s , releases a sandbag at an instant when the balloon is a height = 40.0m above the ground, With what magnitude of velocity does it strike
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