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Assume that the terminal speed of a particular sky diver is 180 km/h in the spread eagle position and 305 km/h in the nosedive position. Suppose that the diver's drag coefficient C does not change from one position to the other, obtain the ratio of the effective cross sectional area A in the slower position to that in the faster position (Aslower /Afaster).
Two conductors having net charges of +19.0 µC and -19.0 µC have a potential difference of 19.0 V between them. Determine the capacitance of the system.
a block mass 15.92kg supported by a vertical massless cable is initially at rest. the block is then pulled upward with
An advertisement shows a 1239 kg car slowly pulling at constant speed a large passenger airplane to demonstrate the power of its newly-designed 79.7-hp (horsepower) engine, How much work is performed by the car on the airplane during this time
How much does the rocket clear the top of the wall
a 1.8 kg block is initially at rest on a horizontal frictionless surface when a horizontal force in the positive direction is applied on the block. what is the work done by the force between the initial position and x = 2.0 m
Two carts of similar mass are about to collide head on with each other. What is the total momentum of this system
A tall tree is growing across a river from you. You would like to know the distance between yourself and the tree, as well as its height, How far away is the tree
A spherical mirror is to be used to fom an image 5 times as tall as the object on a screen positioned 1 meter from the mirror. Find the type of mirror
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountains, which rise to a height of approximately 15,000 ft (580 hPa). The air on the western side of the mountain range is at 800 hPa (T = 70F, r = 0.75), and will subside on the ea..
A motorcyclist is able to ride on the vertical wall of a bowl- shaped track . his weight is counteracted by the friction of the wall on the tires. what force increase or decrease if he rides faster.
A rubber ball of mass 37.5 g is dropped from a height of 1.80 m onto a floor. Thevelocity of the ball is reversed by the collision with the floor,and the ball rebounds to a height of 1.55m. What impulse was applied to the ball during the collision..
You walk at an angle of θ=50.0* toward a planemirror. Your walking velocity has a magnitude of 0.90m/s. What is the velocity of your image relative to you(magnitude and direction)? What equation should I use to figure this problem out?
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