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Two blocks collide on a frictionless surface. After the collision, the blocks stick together. Block A has a mass M and is initially moving to the right at speed v. Block B has a mass 2M and is initially at rest. System C is composed of both blocks. (a) Draw a free-body diagram for each block at an instant through the collision. (b) Rank the magnitudes of the horizontal forces in your diagram. Describe your reasoning. (c) Compute the change in momentum of block A, block B, and system C.
A box of books weighing 397 N is shoved across the floor by a force of 543 N exerted downward at an angle of 37 degrees below the horizontal.
an air-filled parallel-plate capacitor has a capacitance of 1.4 pf. the separation of the plates is doubled and wax is
a 75 kg swimmer dives horizontally off a 500 kg raft. if the divers speed immediately after leaving the raft is 4 ms
Suppose that a person pushes a box with a constant force of 100 N over a distance of 25 meters. What is the change in kinetic energy
assume two cans of differently coloured paint at the same temperature can be mixed together adiabatically. the second law of thermodynamics is simply not relevant to this situation
a stores sign with a mass of 20.0 kg and 3.00 m long has its center of gravity at the center of the sign. it is
A block of mass m1 = 3 kg rests on a table with which it has a coefficient of friction µ = 0.67. A string attached to the block passes over a pulley to a block of mass m3 = 5 kg. The pulley is a uniform disk of mass m2 = 0.7 kg and radius 15 cm. A..
Starting from rest, a 10.5 kilogram block slides 2.70 meter down a frictionless ramp (inclined at 30.0 degree from the floor) to the bottom. Find the speed of the block at the bottom of the ramp
A vacationer floats lazily in the ocean with 95% of his body below the surface. The density of the ocean water is 1025 kg/m3. What is the vacationer's average density
A plane polarized EM wave propagates through a polymer. Such waves obey a similar wave equation to that found for free space. The wave has a magnetic field vector, ??=[(?1.2??)?sin(??y+??t)] ?T, with frequency ??=7.61×10^(14) Hz and wave number ??..
During an eclipse, the Sun, Earth, and Moon are arranged in roughly a straight line. Calculate the percentage change in your weight when going from one type of eclipse to the other
An automobile has a mass of 1500 kg, and its aluminum brakes have an overall mass of 6.00 kg. (a) Assume all the mechanical energy that transforms into internal energy when the car stops is deposited in the brakes and no energy is transferred out of ..
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