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Q. You fire a gun horizontally that is 25m off the ground and the bullet goes at 200m/s. What is the time it takes for the bullet to hit ground, how far down range does bullet travel, and what is the resultant velocity (in m/s) and final angle?
A small immersion heater can be used in a car to heat a cup of water for coffee or tea. suppose the manufacturer's claim of 60% efficiency.
On a very muddy football field, a 100 linebacker tackles a 75 halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.9 north's and the halfback is sliding with a velocity of 7.9 east's.
A box weighing 300N is shoved across the floor of an apartment by a force of 400 N exerted downward at an angle of 35.2° below the horizontal. If the coefficient of kinetic friction between the box and the floor is 0.540, how long does it take to mov..
A shotgun fires a large number of pellets upward, with some pellets traveling very nearly vertically and others as much as 1.0o from the vertical. suppose that the initial speed of the pellets is uniformly 150ms-1 and ignore air resistance.
What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 ^circC? Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
A flight attendant pulls her 63N flight bag a distance of 312m along a level airport floor at a constant velocity. The force she exerts is 39N at the angle of 59° above the horizontal.
The crest of the second hill is circular, with a radius of r = 35m. Avoid friction and air resistance. What must be the height h of the first hill so that skier just loses contact with the snow at the crest of the second hill.
Two point charges, +3.09 µC and -6.05 µC, are separated by 1.33 m. What is the electric potential midway between them?
An object of mass "m" is thrown up an inclined plane of angle "theta" with an initial velocity "v knot". If the motion is resisted by retarding force Fr=-kv (where k is a force coefficient and v the velocity of the object.)
A stand, string, a paper or plastic cup, a nail, a roll of paper towels or similar sized paper, coloured sand, or some other dry powdery product, and a ruler or measuring tape.
find the components of the hiker's total displacement for the trip. Find the magnitude and direction of the displacement from base camp.
A pair of speakers separated by 0.900 m is driven by the same oscillator at a frequency of 672 Hz. An observer originally positioned at one of the speakers begins to walk along a line perpendicular to the line joining the speakers. (Assume the spe..
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