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A large reel of paper installed at the end of a paper machine. d1 = 2m, J = 1000kgm^2, n1 = 60rpm, Tension on Paper = 1000N. Calculate:
a. Motor power when the reel turns at 60rpm.
b. Torque to increase speed to 120 rpm in 10 seconds.
c. Motor power at 11 sec. d. Sketch speed, torque, and power. Include all necessary numbers.
A fireman 44 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 22° above the horizontal. If the speed of stream as it leaves the hose is 40m/s, at what height will stream of water strike the buil..
The diffusion constant for the alcohol ethanol in water is 1.24 10-9 m2/s. A cylinder has a cross-sectional area of 3.95 cm2 and a length of 2.02 cm. what mass of ethanol diffuses through the cylinder
A horse canters away from its trainer in a straight line, moving135 m away in 15.6 s. It then turns abruptly and gallops halfwayback in 6.20 s. Calculate its average speed for the entire trip, using "away fromthe trainer" as the positive direction.
The length of a simple pendulum is 0.79 m, and the mass of the bob at the end of the cord is 0.24 kg. What is the angular frequency of the motion
A transformer is to be used to provide power for a computer disk drive that needs 5.8 V (rms) instead of the 120 V (rms) from the wall outlet. Find the number of turns in the secondary
The air pressure inside the tube of a car tire is 431 kPa at a temperature of 14.5 °C. What is the air pressure inside the tube
The magnetic force exerted on a 1.3-m segment of straight wire is 1.5N . The wire carries a current of 3.2A in a region with a constant magnetic field of 0.52T. What is the angle between the wire and the magnetic field?
A 1.2 MHz ultrasonic beam is used to scan body tissue. If the speed of sound in a certain tissue is 1540 m/s, what size is the smallest detail that can be resolved
A 1.6 mL syringe has an inner diameter of 5.8 mm, a needle inner diameter of 0.25 mm, and a plunger pad diameter (where you place your finger) of 1.0 cm. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100.
The average density of a fish can be found by firstweighing it in air and then finding the apparent weight of the fishas it hangs completely immersed in water. what is the average density of the fish
A stone is dropped from a balloon rising at 10 m/s and reaches the ground in 8 sec. How high was the balloon when the stone was dropped
A roller coaster starts from rest at the top of an 18m hill. The car travels to the bottom of the hill and continues up the next hill that is 10.0m high
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