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Three water balloons are tossed from a fourth floor dormitory window with the same initial speed. Ball A is launched 45 degrees above the horizontal, Ball B is launched 45 degrees below the horizontal, and Ball C is launched horizontally. Which ball hits the ground with the greatest speed? Ignore air resistance.
A person on earth notices a rocket approaching from the right at a speed of 0.81c and another rocket approaching from the left at 0.58c. What is the relative speed between the two rockets
Hail comes straight down at a mass rate of m/?t = 0.070 kg/s and an initial velocity of v0 = -13 m/s and strikes the roof perpendicularly. Unlike rain, hail usually does not come to rest after striking a surface. Instead, the hailstones bounce off..
When a resistor is connected across the terminals of an acgenerator (112 V) that has a fixed frequency, there is a current of0.500 A in the resistor. When an inductor is connected across theterminals of this same generator, there is a current of 0.40..
A flat circular mirror of radius 0.140 m is lying on the floor. Centered above the mirror, at a height of 0.810 m, is a light source. Calculate the diameter of the bright circular spot formed
a person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 30.0
A horizontal force of 60 N pushes a box that weighs 75 N across the floor at a constant speed. The coefficient of kinetic friction is 0.8. Find the rate at which power is generated by applied force
When a pilot takes a tight turn at high speed in a modern fighter airplane, the blood pressure at the brain level decreases blood no longer perfuse the brain, and the blood in the brain drains.
Clarisse invests $61500 in money-market accounts at three different banks. Bank A pays 2% interest per year, bank B pays 2.5%, and bank C pays 3%. She decides to invest twice as much in bank B as in bank A. After one year, Clarisse has earned $161..
Consider the arrangement of three plates, each of area A = 25.0 cm2. If d = 0.100 mm, what is the capacitance of the structure. You may assume one terminal is attached to the wire on the left and the other terminal is attached to the middle plate
In one hand you hold a 0.10 kilogram apple, in the other hand a 0.19 kilogram orange. Find the magnitude of the force of gravity in the apple exerts on the orange
a hoisting engine lifts a 200kg bucket of 1200liters of clay with density of 2000kg per cubic meter to a height of 7
the volume of an ideal gas changes from .40 to .56 cm3 although its pressure remains constant at 50000 Pa. what work is done on the system by its environment
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