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Two ice skaters, Daniel (mass 70.0 kg) and Rebecca (mass 45.0kg), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, who is moving at 13.0m/s before she collides with him. After the collision, Rebecca has a velocity of magnitude 7.00m/s at an angle of 53.1 from her initial direction. Both skaters move on the frictionless and horizontal surface of the rink.
The two mediums below propagate particles differently. Which of the two medium would have higher acoustic velocity and create better propagation or movement of particles? water balloons, hard baseballs.
An iron bolt of mass 63.4 g hangs from a string 32.6 cm long. The top end of the string is fixed. Without touching it, the magnet attracts the bolt so that it remains stationary, displaced horizontally 28.5 cm to the right from the before vertical li..
What is conical pendulum? obtain and expression for its period?
A 47-g golf ball is driven from the tee with an initial speed of 52.0 m/s and rises to a height of 24.2 m.
A 5.0 g bullet leaves the muzzle of a riffle with a speedof 320 m/s. What force (assumed constant) is exerted on the bulletwhile it is traveling down the 0.82 m long barrel of the riffle?
A 45.3-cm diameter disk rotates with a constant angular acceleration of 2.20 rad/s2. It starts from rest at t = 0, Find the linear velocity and tangential acceleration of P at t = 2.30 s
A canoe has a velocity of 0.430 southeast relative to the earth. Find the magnitude of the velocity of the canoe relative to the river
A convex mirror has a focal length of -34.0 cm. A 15.0-cm-tall object is located 34.0 cm in front of this mirror. Determine the location and size of the image
In a typical game of squash, two people hit a soft rubber ball at a wall until they are about to drop due to dehydration and exhaustion. What will be the temperature increase of the ball after one bounce
Global Circulation Models typically have grids of 100-300km on a side. There are obviously lots of atmospheric processes that occur at smaller scales than this. Convection, cloud formation, the effect of mountains...
You want to support a sheet of fireproof paper horizontally using only a vertical upward beam of light spread uniformly over the sheet. There is no other light on this paper. The sheet measures 22.0cm by 28.0 cm and has a mass of 1.50g.
A rifle with a barrel length of 56 fires an 8 bullet with a horizontal speed of 350. The bullet strikes a block of wood and penetrates to a depth of 14. (a) What resistive force (assumed to be constant) does the wood exert on the bullet? (b) How long..
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