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A force does +130 Joule of work when it acts on a moving object and its direction is in the similar direction as the object's displacement. Find how much work does this force do when the angle between it and the object's displacement is 56°? (Suppose the displacement is the same.)
W = _____kg · m/s2
A bob of mass = 0.300 is suspended from a fixed point with a massless string of length = 25.0. What tangential speed must the bob have so that it moves in a horizontal circle with the string making an angle 21.0 with the vertical
a 8.9 microm thick fine metal foil separates one end of two pieces of optically flat glass. when a monochromatic light
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A 6.30 kg block is pushed 9.45 m up a smooth 40 degree inclined plane by a horizontal force of 70 degrees north. Calculate the work done by the normal foce
FOUR PEOPLE WITH A COMBINED MASS OF 300 KG ARE RIDING IN A 1100 KG CAR. WHEN THEY DRIVE DOWN A WASHBOARD ROAD WITH BUMPS SPACED 5.0M APART, HOW MUCH DOES THE CAR RISE UP ON ITS SPRINGS
Three carts of masses Three carts of masses m1=6.0 kg, m2=12.0 kg, and m3=5.0 kg move on africtionless horizontal track with speeds of v1 =5.0 m/s, v2 =3.0 m/s, and v3 =-4.0 m/s,as shown in Figure . The carts stick together after colliding. Find t..
A 1.90 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 15.2 m/s. Calculate the induced emf between the ends of the wire
You land on a new planet with radius 5000km. You measure the freefall acceleration due to gravity to be 8.5m/s^2 at the surface
A block of mass 2.00kg starts at rest at the top of a ramp that is inclined delta= 40.0 degrees with the horizontal. The block slides down the ramp a distance of 3.60 meters where it contacts a relaxed spring with K=300N/m. If the coefficient of k..
A ship displaces 3.00*103 m3 of fresh water on a river. When is passes out to sea, find what volume of sea water will it displace
Two point charges 1.6cm apart have an electric potential energy -160?J . The total charge is 25nC. What are the two charges
When beryllium-7 ions (m = 11.65 x 10-27 kg)pass through a mass spectrometer, a uniform magnetic field of 0.322T curves their path directly to the center of the detector, as inthe drawing. For the same accelerating potential difference, whatmagnet..
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