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A helicopter is moving horizontally to the right with at aconstant velocity. The weight of the helicopter is W = 53800 N. The lift force L generated by the rotating bladesmakes an angle of 21 degrees with respect to the vertical.
(a) What is the magnitude of the lift force?
(b) Determinethe magnitude of air resistance R that opposes the motion.
A fish in a flat-sided aquarium sees a can of fish food on the counter. What is the actual distance between the can and the aquarium
express the potential difference between the plates.
A person drops a cylindrical steel bar (Y = 6.0 × 1010 Pa) from a height of 2.00 m (distance between the floor and the bottom of the vertically oriented bar). The bar, of length L = 0.58 m, radius R = 0.50 cm, what is the maximum compression of the..
Two mirrors meet at a 133° angle. If light rays strike one mirror at 40°, at what angle ? do they leave the second mirror?what is the value of h.
A block of mass 50 kg is free to slide on a horizontal frictionless surface. A constant force F acting 20° above the horizontal is applied to the block. What is the magnitude of the applied force F
During an earthquake, the top of a building oscillates with an amplitude of 30cm at 1.4Hz. What is the maximum acceleration of the top of the building
A car coasts (engine off) up a 30 degree grade. If the speed of the car is 25m/s at the bottom of the grade, Compute the time it takes for the car to come to rest
The coefficients of friction between a block of mass 1.0 kg and a surface are ?s = 0.75 and ?k = 0.40. What is the magnitude of the frictional force
If the shot is made from a horizontal distance of 5.10m and must be accurate to plus/minus 0.23m (horizontally) what is the range of initial speeds allowed to make a basket
A bullet of mass 0.0022 kg initially moving at 503 m/s embeds itself in a large fixed piece of wood and travels 0.71 m before coming to rest. Assume that the acceleration of the bullet is constant.
Element X decays to element Y with a half-life of 0.77 s. Initially there is a sample of pure X and after 2.31 s there are 7g of Y. What was the mass of the original sample
The drive propeller of a ship starts from rest and accelerates at 2.50 x 10-3 rad/s2 for 2.15 x 103 s. find the total angular displacement of the propeller
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