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A steel ball of mass m is fastened to a light cord of length Land released when the cord is horizontal. At the bottom ofthe path, the ball strikes a hard plastic block of mass M = 4m,initially at rest on a frictionless surface. The collision iselastic.
Find the tension in the cord when the ball's height above itslowest position is 1/2 L. Write your answer in termsof m and g.
Find the speed of the block immediately after thecollision.
To what height h will the ball rebound after collision?
an electric dipole has charges of 4.55pc that are separated by 6.75cm . the dipole lies on the x-axis its positive end
Four identical charges (+2.5μC each) are brought from infinity and fixed to a straight line. The charges are located 0.40 m apart. Determine the electric potential energy of this group.
A 44-kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is 1.0 m/s. determine her altitude as she crosses the bar
n unmarked police car traveling a constant 95 km/h is passed by a speeder traveling 130 km/h. how much time passes before the police car overtake the speeder
q1. two crates of mass 57 and 164 are in contact and at rest on a horizontal surface. a 650 force is exerted on the
A current of 6.0 A is drawn from the battery in the figure shown below. How much is the voltage of the battery Vab in V
a 6.00 resistor 10.0 mh inductor and a 150 microf capacitor are connected in series to a 60.0 v rms source having
A bar magnet is oriented with its magnetic dipole moment at 38.5° to the direction of a 0.0145-T magnetic field, Find the magnitude of the magnet\'s magnetic dipole moment
a particle of mass m moves under a force f -cx3 where c is a positive constant. find the potential energy function. if
What is the angle. The velocity of a particle moving in the xy plane is given by = (5.5t - 4.5t2)i + 8.3j
A potter's wheel having a radius 0.48 m and a moment of inertia of 12.3 kg · m2 is rotating freely at 55 rev/min. Find the effective coefficient of kinetic friction between the wheel and the wet rag
The little Dutch boy saved Holland by sticking his finger in the leaking dike. If the water level was 2.5 m above his finger, estimate force of the water on his finger
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