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A billiard ball, initially at rest, is given a sharp impulse by a cue. The cue is held horizontally a distance h above the centerline. The ball leaves the cue with a speed vo, and because of its "forward English", eventually acquires a final speed of 9vo/7. Show that h=4R/5, determine where is the radius of the ball.
An electron moves along the z-axis with vz = 4.4 x 10^7 m/s. As it passes the origin, what are the strength and direction of the magnetic field at the following (x, y, z) positions?
A rectangular loop of wire carrying a 4.0-A current is placed in a magnetic field of 0.60 T. What is the area of this loop
Many radioisotopes have important industrial, medical, and research applications. One of these is 60Co, which has a half-life of 5.20 years and decays by the emission of a beta particle, What is the minimum number of nuclei in the source at the tim..
To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest as in the figure below. The belt is a 160-turn coil. find the magnitude of the average induced emf in the coil during that time
A satellite is in a circular orbit around the earth. The period of the satellite is 22 hr.
a spherical ball hanging on a string on a smooth, frictionless wall. The mass of the ball is m, its radius is R, and the length of the spring is L. Find the normal force between the ball and the wall
Two billiard balls of equal mass and speed moving against each other collide and bounce backwards away from each other. compare the forces from each ball on the other
A 38.8-kg boy, riding a 2.27-kg skateboard at a velocity of +5.22 m/s across a level sidewalk, jumps forward to leap over a wall. What is the skateboard's velocity relative to the sidewalk
A crate of mass 9.8 kg is pulled up a rough incline with an initial speed of 1.46 m/s. How much work is done by the gravitational force on the crate
The earth orbits the sun once a year (3.16 x 10^7 s) in a nearlycircular orbit of radius 1.50 x 10^11 m. With respect to the sun,determine the magnitude of the earth’s centripetal acceleration.
An opaque container is 15 cm deep. It contains only a single coin. When looking into the container at a viewing angle of 50 degrees relative to the vertical side of the container, you see nothing on the bottom.
An aluminum calorimeter with a mass of 100 g contains 250 g of water. The calorimeter and water are in thermal equilibrium at 10.0°C. Determine the specific heat of the unknown sample
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