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A force of 250N is applied to a hydraulic jack piston wth a0.1m diameter. If the output piston, which supports the load,has a diameter of .5m, how much weight can be lifted?
The energy released by nuclear bombs is measured in kiloton (kt) or megaton (Mt) units. One kiloton is a unit of energy released by 1000 tons of trinitrotoluene (TNT). One kiloton is 4.2×1012 joules. The yield of fission bombs is typically between..
You stand in the earth's magnetic field, directly facing its horizontal component (in other words, facing magnetic south). Compute the outward flux through your body's back surface
A 10.4-g bullet is fired into a stationary block of wood having mass m = 5.03 kg. determine the original speed of the bullet
A satellite of Mars, called Phobos, has an orbital radius of 9.4 106 m and a period of 2.8 104 s. Assuming the orbit is circular, determine the mass of Mars
A train is travelling up a 4.5 degree incline at a speed of 3.25 m/s when the last car breaks free and begins to coast without friction. a) How long does it take for the last car to come to rest momentarily? b) How far did the last car travel befo..
A student's far point is at 17.0 cm, and she needs glasses to view her computer screen comfortably at a distance of 45.0 cm. What should be the power of the lenses for her glasses
The penny-farthing is a bicycle that was popular between 1870 and 1890. As the figure shows, this type of bicycle has a large front wheel and a small rear wheel. On a Sunday ride in the park the front wheel (radius = 1.05 m) makes 444 revolutions. Ho..
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. This moon takes 19.0 days on average to complete one nearly circular revolution around the unnamed planet.
A constant force of 25N acts on an object having a mass of 2kg for 3 seconds. What is the magnitude of the change in the object's momentum
A sled is pulled with a horizontal force of 20 N along a level trail, and the acceleration is found to be 0.35 m/s2. find the coefficient of kinetic friction between the sled and the trail
A thin film of plastic (n = 1.43) coats a piece of glass (n = 1.6). What is the minimum thickness of the film for which 500 nm light does not reflect off of it
Using a 677-nm wavelength laser, you form the diffraction pattern of a 0.111-mm wide slit on a screen. How far is the screen located from the slit
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