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A ball is thrown straight up in the presence of gravity and quadratic air resistance (frictional force = -cv^2v~). Find the velocity as a function of height for both the upwards and downwards parts of the path.
The earth is 1.49*10^11 meters from the sun. If the solar radiation at the top of the earths atmosphere is 1340 W/m^2, what is the total power output of the sun
A boy uses this string to whirl a 10-kg stone in a horizontal circle of radius 10 m. The boy continuously increases the speed of the stone. At approximately illustrate what speed will the string break?
A heat engine, in each cycle, takes in 750 J of heat and exhausts 300 J of heat. what is the smallest possible high temperature for the engine cycle
Using a ball that has unknown mass m. You plot your data in the form of f2 versus M/L, with f in rev/s,M in kg, and L in m. calculate the mass m of the ball
When G was first measured by Henry Cavendish, newspapers of the time hailed his experiment as "weighing Earth experiment." And Why.
You set up an experiment with two polarizer screens on an optical bench and collect data for the intensity of the light, What is ambient light in the room as you took your data
A solution has a hydronium-ion concentration of 1.0 x 10-5 mol per liter. What is the hydroxide-ion concentration of this solution
a 500 g ball swings in a vertical circle at the end of a 1.5-m-long string. When the ball is at the bottom of the circle the tension in the string is 15 N. What is the speed of the ball at that point?
In a certain oscillating LC circuit the total energy is converted from electric energy in the capacitor to magnetic energy in the inductor in 1.30 µs. What is the frequency of oscillation
At some automobile toll-collecting stations, the thin metal wire sticks up from the road and makes contact with cars before they reach the toll collector. What is the reason of this wire.
a hiker throws a stone from the upper edge of a vertical cliff. the stone's initial velocity is 25m/s directed at 40 degrees. with the face of the cliff. whats the height of the cliff?
A block of mass m lies on a horizontal table. The coefficient of static friction between the block and the table is mu_s. If the block is at rest, what is the magnitude of the force due to friction
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