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The battery for certain cell phone is rated at 3.70V. According to the manufacturer it can produce 3.15 X 10^4 J of electrical energy, enough for 5.25 h of operation, before needing to be recharged. find the average current that this cell phone draws when turned on.
A 1-cm-thick layer of water stands on a horizontal slab of glass. What is the maximum angle of incidence for which the light ray can emerge into the air above the water
With a particular grating a doublet of the two wavelengths 731.3 and 732.1 nm is viewed in the third order at 9.3° to the normal, find the grating spacing in nanometers
An amazing parent pushes their child's sled (total mass = 65kg) so that the sled is moving at 5 m/s at the top at the sledding hill which makes a 20 degree angle with the horizontal. calculate the speed of the sled
Find the maximum displacement of the 100,000 kg sace station if the astronaut's motion has an amplitude of 0.100 m.
In creating his definition of horsepower, James Watt, the inventor of the steam engine, calculated the power output of a horse operating a mill to grind grain or cut wood, Calculate the power output, in hp, of a 72-kg human being
A water pipe is having a 2.5cm inside diameter carries water into the basement of a house at a speed of 0.90m/s, what are the speed AND water pressure at the second floor
A harvest mouse can detect sounds as quiet as -10 . Suppose you are sitting in a field on a very quiet day while a harvest mouse sits nearby at the entrance to its nest. How far is the harvest mouse from the leaf
in a wild shot rashad flings a pool ball of a mass of a .7m high pool table and the ball hits the floor with a speed
Why is it better for some purposes to use a medium size telescope on a mountain instead of a telescope in space?
Four point charges have the same magnitude of 2.3 × 10-12 C and are fixed to the corners of a square that is 3.8 cm on a side, Determine the magnitude of the net electric field that exists at the center of the square
A 12kg box is decelerated from an initial speed of 20m/s to rest in a distance of 13m while traveling up a 42 degree incline. What was the net work done on the box by friction
Steam can cause more serious burns than water at the same temperature. Here we examine this effect quantitatively, noting that flesh becomes badly damaged when its temperature reaches 50.0 C a)Calculate the heat released as 13.0g of liquid water a..
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