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A 0.70 kg ball is moving horizontally with a speed of 7.7 m/s when it strikes a vertical wall. The ball rebounds with a speed of 3.7 m/s. What is the magnitude of the impulse of the ball?
A student of weight 665 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force N on the student from seat is 566 N.
A square room has 3 mirrored walls of length L with one side missing. A laser is fired from the center of the open side of the room with an angle of incidence, I, what must the angle of incidence be
Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor, How much charge can the cloud hold before the dielectric strength of the air is exceeded
A 2180kg satellite used in a cellular telephone network is in a circular orbit at a height of 750km above the surface of the earth. What is the gravitational force on the satellit
You are called as an expert witness in the trial of a traffic violation. How fast was he going when he hit the breaks
A small plastic sphere charged to -10 nC in held 1.0 cm above small glass bead at rest on a table. find the maximum charge can the bead have without leaping up
A 2.50 g bullet, traveling at a speed of 465 m/s, strikes the wooden block of a ballistic pendulum. The block has a mass of 275 g. What is the speed of the bullet/block combination immediately after collision.
a 760 kg light weight helicopter ascends from the ground with an acceleration of 2.5m/s^2. what is the work done by the lifting force
What is the ratio of the cardinals magnitude. One mole of tungsten (6 1023 atoms) has a mass of 184 grams, and its density is 19.3 grams per cubic centimeter. You have a long thin bar of tungsten, 2.3 m long, with a square cross section, 0.15 cm on..
At room temperature (20C) the area of a hole in a sheet of material is 5.505 cm2. What is the thermal coefficient of linear expansion for the material
A firefighter with a weight of 702 N slides down a vertical pole with an acceleration of 2.90 m/s2, directed downward. What are the magnitudes and directions (choose the positive direction up) of the vertical forces
A solid sphere rolls without slipping or sliding along a horizontal surface toward an incline. Calculate the kinetic energy of sphere as it rolls along the horizontal surface
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