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The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=47800 N. The lift force L generated by the rotating blade makes an angle of 21.0° with respect to the vertical.
(a) What is the magnitude of the lift force?
(b) Determine the magnitude of the air resistance R that opposes the motion.
A 0.140 kg baseball is thrown horizontally with a velocity of 28.9 m/s. It is struck with a constant horizontal force that lasts for 1.85 ms, What was the magnitude of the horizontal force
A ball on the end of a string is revolved at a uniform rate ina vertical circle of a radius 72.0cm. calculate the tension in the string when the ball isat the top of its path
Two long, parallel wires are separated by a distance of 2.50cm . The force per unit length that each wire exerts on the other is 3.20×10?5N/m, determine the current in the second wire
The longest "string" (a thick metal wire) on a particular piano is 3.0 m long and has a tension of 300.0 N. It vibrates with a fundamental frequency of 27.5 Hz. What is the total mass of the wire.
An ideal gas at 13.6 °C and a pressure of 1.41 x 105 Pa occupies a volume of 3.90 m3. How many moles of gas are present
A lamp is suspended by a massless string from the ceiling of a descending elevator which decelerates at 1.7 m/s2. what is the mass of the lamp
question1how much 235u is consumed per year in gy to produce sufficient electricity to continuously run a 100-w light
If the heat necessary to warm 855 g of water from a temperature of T1 = 24.0 °C to T2 = 80.0 °C were somehow converted to translational kinetic energy of this amount of water
A gasoline engine fuel burns at a temp of 500 degrees Celsius. Its radiator cools to 70 degrees celsius. What is the engines Carnot efficiency
A car of mass m = 1470 kg is pushed off a cliff of height h = 23 m. If the car lands a distance of 7 m from the base of the cliff, what was the kinetic energy of the car
A box is sliding up an incline that makes an angle of 17.0 ° with respect to the horizontal. How far does the box travel along the incline before coming to rest
Compute the magnitude & direction of the current.
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