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Q. A stone is thrown directly upward at 15.0 from ground level and feels no appreciable air resistance. Use the work-energy theorem to find how high it will be when its speed has been reduced to half of its initial value.
Q. Two particles are fixed to an x axis: particle 1 of charge q1 = +1.8e-8 C at x = 20 cm and particle 2 of charge q2 = -3.00q1 at x = 70 cm. At what coordinate on the axis is the net electric field produced by the particles equal to zero?
What is an average power output of the laser. What is the rms value of the electric field in the beam.
A copper wire has a square cross section 2.7 on a side. The wire is 3.8 long and carries a current of 4.0 . The density of free electrons is 8.5*10^28 m^-3.
when the field is vertical to the plane of loop, when the field makes a 90.0 angle with the normal to plane.
Find out the altitude of the plane
A wheel 65 cm in diameter accelerates uniformly from 215 rpm to 390 rpm in 6.0 s. How far will a point on the edge of the wheel have traveled in this time.
Direction of the surface winds What is the expected composition
Rare 1918 "Jenny" stamp, depicting a misprinted, upside-down Curtiss JN-4 "Jenny" airplane, was sold at auction for $525,000. A collector uses a simple magnifiying glass to examine the "Jenny," obtaining a linear magnification of 2.4 when the stam..
If you were to send a beam of laser light to a space station above an atmosphere and just above the horizon, would you aim the laser above, below or at the visible space station.
A tank having a volume of 0.100 m3 contains helium gas at 135 atm. How various balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.50 atm.
A 340 kg piano slides 3.7 m down a 33° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.37.
A 318 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 624 mmHg. compute the moles of Ar present.
A man pulls a crate of mass 75.0 kg across a level floor. He pulls with a force of 180.0 N at an angle of 26.0° above the horizontal. When the crate is moving, the frictional force between the floor and the crate has a magnitude of 130.0 N. If the cr..
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