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Block one of mass 10kg is on a horizontal table. There is friction between the block and the table, the coefficient of kinetic friction is 0.25. A horizontal string is connected to the block and passes over a pulley to a second mass of 20 kg that is hanging from the string. This mass is accelerating downward. Find the tension in the string and the acceleration.
The electric field midway between two equal but opposite point charges is 745 N/C, What is the magnitude of the charge on each
A ball of mass 0.40 kg has a kinetic energy of 28.8 J. What is the magnitude of the linear momentum of the ball
suppose that the engineer is at x = 0 when, at t = 0, he first spots the locomotive. Sketch x(t) curves for the locomotive and high-speed train for the cases in which a collision is just avoided and is not quite avoided. Do this on paper. Your ins..
A monoenergetic beam of neutrons, cp = 4 X 1 0 10 neutrons/cm2-sec, impinges on a target 1 cm2 in area and 0. 1 cm thick. How many neutron interactions per second occur in the target
An aircraft weighing 819 N is accelerated at 11.7 m/s2 for 5 seconds, at which time the aircraft launches. What is the force required to launch the aircraft
two objects of unequal mass hung vertically over frictionless pulley of negligible mass. Determine the magnitude of the acceleration of the two objects
A student sits on a freely rotating stool holding two dumbbells, each of mass 3.02 kg, Find the new angular speed of the student
Suppose 1.3 mol of an ideal gas is taken from a volume of 3.5 m3 to a volume of 1.8 m3 via an isothermal compression at 31°C
An electron in an oscilloscope is accelerated as a result of the potential difference between the cathode and anode. Find the voltage drop from cathode to anode
Suppose you have two equal mass objects both on a gentle incline. One is a glider on an air track while the other is a ball on a straight slope. Explain what type of energy both objects have
Hagrid thinks he is more powerful than Snape.He performs 1800 J of work in a total of 10 seconds, How much power does each man exert
A 50 ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 2.50 turns each second. The distance from one hand to the other is 1.5 . Biometric measurements indicate that each hand typically creates ..
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