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A block of mass m = 10 kg is pushed across a rough table with a force applied at an angle of 28o with respect to the horizontal direction and with a magnitude of 25 N. If the block slides at constant velocity, what is the work done by friction as the block moves 2.0 m across the table? Give your answer in Joules to three significant digits.
A 12 V battery is connected by a switch (not shown) in series to an inductor (inductance 400 mH) and a resistor (resistance 250 ohms). what is the rate of change of current
A fan is rotating at a rate of 740 rpm. When the motor is turned off, What is the angular acceleration of the blades as they slow down
Two tiny conducting spheres are identical and carry charges of -29.4C and +70.0C. What is the magnitude of the force that each sphere experiences
When a 0.2 kg mass is suspended from a vertically hanging spring it stretches the spring from its original length of 0.5 cm to a total length of 6.0 cm. what is the maximum speed of the mass as it oscillates
a projectile is at the highest point in its path. is its acceleration at this instant greater than less than or equal
Click on the Energy vs. Position button to see a plot of the kinetic, potential, thermal, and total energies as a function of the skater's position. Try Bar Graph to see the same information as a bar graph. For this tutorial, you should have the C..
Two identical cars (m = 1350 kg) are traveling at the same speed of 26.9 m/s. compute the magnitude of the total momentum of the two cars
An artillery shell of mass 10.00 kg, lying at rest on the ground, accidentally detonates, exploding into three pieces of shrapnel. What is the speed of the third piece of shrapnel
Imagine that we add 250 J of thermal energy to 1 liter (L)(1000cm^3) of air initially at room temperature and normal pressure. By how much does its pressure increase
A skier starts from rest at the top of a hill. The skier coastsdown the hill and up a second hill, as the drawing illustrates. Thecrest of the second hill is circular, with a radius of 31.5 m.Neglect friction and air resistance.
A helicopter is ascending vertically with a speed of 5.57. At a height of 124 above the Earth, package is dropped from a window. How much time does it take for the package to reach the ground?
A ball is dropped from the top of a 48.0m high cliff. At the same time, a carefully aimed stone is thrown straight up from the bottom of the cliff with a speed of 20.0m/s . The stone and ball collide part way up. how far from the base did this ..
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