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A Ferris wheel 30.0 meter in diameter rotates once every 18.0 second.
(a) Find the ratio of a man apparent weight to her real weight at the top?
(b) Find the ratio of a man apparent weight to her real weight at the bottom?
A uniform ladder of length L and weight w is leaning against a vertical wall. The coefficient of static friction among the ladder and the floor is the similar as that between the ladder and the wall.
Total required annual electrical energy output from the wind farm =120 TJ Max number of turbines for which there is space on the farm =20. Average annual wind speed at the site= 9.0 ms^-1
Carlos is pitching in the nal game of the season. The pitcher's mound is 18.4 meters from home plate, With what speed does the ball cross the plate
a high-voltage transmission line with a resistance of 0.29 km carries a current of 1010 a. the line is at a potential
the only force acting on a 1.8 kg body as it moves along the positive x axis has an x component fx - 6x n where x is
You throw a ball vertically upward so that it leaves the ground with velocity 2.49 m/s. (a) What is its velocity when it reaches its maximum altitude. (b) What is its acceleration at this point.
Abody weight W is attached by a string of length L, to a hook on a vertical wall. A horizontal force F acting on the body holds it at a distance D from the wall. Derive the equation, which give the F in terms of W, L and D
when jumping straight down you can be seriously injured if you land stiff-legged. one way to avoid injury is to bend
A 1000kg car coasting at 72.0km/h on a level frictionless road comes to a 15 degree incline. Calculate how far the car will travel before coming to rest
A 150 g aluminum cup contains 150 g of water and both are at 13 C. If you add 150 g of hot water at 90 C what is the final temperature at thermal equilibrium? How much hot water at 90 C needs to be added to achieve a final temperature of 44 C?
A storage tank 25m high is filled with gasoline. Find the gauge pressure at the bottom of the tank
A solid uniform brick is placed on a sheet of wood. When one end of the sheet is raised , What is the width w of the brick
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