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A football is kicked straight up into the air; it hits the ground 3.4s later. What was the greatest height reached by the ball? Assume it is kicked from ground level. With what speed did it leave the kicker's foot?
A ball is released at the bottom of a container of liquid. The ball rises upward, pops out of the liquid and reaches a height of 20 cm, Calculate the velocity of the ball when it leaves the liquid
In a certain experiment, the pressure of a gas depends on the volume by P=alphaV^3+betaV^2, What is the work done on the gas
Given the standard molar volume of gas is 22.71 L/mol at a temp of 273.15K and a pressure of 1 bar, what is the value of the ideal gas constant
The electric field points radially outward at all points within the sphere (and outside too, for that matter). What is the strength of the electric field at a distance r from the center, inside sphere.
A car moving at 78mi/hr approaches a yield sign 70m ahead. The driver slows the car with a constant acceleration of -4.5m/s2 by hitting the brakes. How long does it take the car to reach the yield sign
A 5-kg mass moves under the influence of a force F=(2e^t ?)N, where t is time. What is the particle's position as a function of time
A train moving at a constant speed of 59.0 km/h moves east for 50.0 min, What is the average velocity of the train during this run
Two small insulating spheres with radius 9×10-2 are separated by a large center-to-center distance of 0.52. One sphere is negatively charged.
assume the roller coaster (h1 = 34 m, h2 = 10 m, h3 = 20) passes point A with a speed of 2.00 m/s. If the average force of friction is equal to one sixth of its weight, with what speed will it reach point B? The distance traveled is 45m.
Its walls are equally high and 11 m apart. He takes off by driving a motorcycle up a short ramp sloped at an angle of 24°. Illustrate what minimum speed must he have in order to clear the canyon?
It is possible to use electromagnetic radiation to ionize atoms. To do so, the atoms must absorb the radiation, What is the longest radiation wavelegth
Four small charged bodies of equal charges Q=-1nC are placed at four vertices of a rectangle with sides a=4cm and b=2cm. Determine the direction and magnitude of the electric force
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