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If the energy that goes into evaporating one kilogram of water from Lake Michigan at 11.0 oC were used instead to raise that amount of water above the surface of the lake, how high (in m) would it be lifted?
An asteroid is in a nearly circular orbit of radius 5.668 AU about the Sun. Determine the period of this asteroid
Two circular coils of current-carrying wire have the same magnetic moment. The first coil has a radius of 0.094 m, has 134 turns, and carries a current of 3.8 A
Four point charges are located at the corners of a square measuring 50.0 cm on each side. Three of the charges are -2.00 uC each and the fourth is -5.00 uC, Find the potential energy of the system of four charges
If the rope starts at an angle of 30.0° with the vertical, illustrate what is Bruce's speed at the bottom of the swing?
A professor walks in a long hall carrying a vibrating 512Hz tuning fork. The end of the hall is closed so that sound reflects from it. The student hears 4 beats per second. How fast is the student walking and in what direction.
Find the recoil speed of the rifle. A 650-N force acts in a northwesterly direction. A second 650-N force must be exerted in what direction so that the reultant of the two forces points westward? Illustrate your answer with a vector diagram.
Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed, Determine the magnitude of the electron's centripetal acceleration
A 1200 kg car is moving with a velocity of 20 m/s when the brakes are applied uniformly, Find the braking force on the car by finding the acceleration of the car
One of the concrete pillars that support a house is 2.5-m tall and has a radius of 0.50 m. The density of concrete is about 2.3 x 10^3 kg/m3. Find out weight of this pillar in pounds (1 N = 0.2248 lb)
A 6.4kg ball, hanging from the ceiling by a light wire 135cm long, is struck in an elastic collision by a 1.80 ball moving horizontally at 4.20 m/s just before the collision. Find the tension in the wire just after the collision.
Luigi wishes to suspend a lantern of mass m between his store and a telephone pole. THe cable attached to his store makes an angle (theta) to the wall. The cable to the telephone pole is horizontal.
In the figure, suppose that the separation between speakers A and B is 5.90 m and the speakers are vibrating in phase. They are playing identical 110-Hz tones, and the speed of sound is 343 m/s.
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