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A 23-g bullet traveling 270m/s penetrates a 2.2kgblock of wood and emerges cleanly at 215m/s.
If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
35 kg girl is bouncing on a trampoline. Throughout a certain interval after leaving the surface of the trampoline, her kinetic energy decreases to 170 J from 470 J. How high does she rise during this interval? Avoid air resistance.
what is the energy dissipated in the resistor for a battery with an emf of 12 volts connected to a 545-ohms resistor
The leg and cast weigh 220 N. find out the weight and the angle needed so that no force is exerted on the hip joint by the leg plus the cast.
A 258-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.980, and the log has ..
Two 480g blocks of wood are 2.0 m apart on a frictionless table. A 9.0g bullet is fired at 440m/stoward the blocks. What is the speed of the second block after the bullet stops
A person walks 25.0 degrees north of east for 3.1 km. How far would another person walk due north and due east to arrive at the same location.
What fractional increase in tension of one wire will lead to the occurrence of 2 beats/s when both wires oscillate simultaneously.
A roller coaster seat exerts a normal force of 120N on a 40kg passenger at the apex of a vertical loop. what is the speed of the coaster
Two long parallel wires each with a mass per unit length of 25.10 g/m are supported in a horizontal plane by 2.5 cm long strings. Each wire carries the same current, I, causing the wires to repel each other so that the angle between supporting string..
A light ray enters a glass slab at point A at an angle of 57.6° with respect to the surface normal and then undergoes total internal reflection at point B. What minimum value for the index of refraction of the glass can be inferred from this?
Using a simply pulley/rope system, a crewman on an Arctic expedition is trying to lower a 5.52 kg crate to the bottom of a steep ravine of height 23.9 meters. At what speed will the crewman hit the bottom of the ravine
A block of mass 2.7 kg being released from rest on a 1m frictionless plane, inclined at an angle of 40 degree. The block sided down the inclined and struck second block mass of 3.7 kg. If the two blocks stick together, with what speed would they move..
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