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The centripetal acceleration in a horizontal centrifuge is 75 g's when it is rotating at 2000 rpm.
What is the radius of the centrifuge?
The light bulb in the circuit has a resistance of 11 ohms and consumes 6.7 W of power as the 1.25 m long, What speed must the rod have if the current in the circuit is to be 0.65 A
An athlete at a gymnasium holds a 3.0kg steel ball in his hand. His arm is 70cm long and has a mass of 4.0kg. Calculate the magnitude of the torque about his shoulder if he holds his arm
If a bullet is fired vertically upwards with the speed calculated in (b), what is the maximum height that the bullet can reach.
A 1300kg sports car accelerates from 0m/s to 33m/s in 12s . What is the average power of the engine?
Two objects each have a positive charge. The total charge on both objects is 390 µC. When the objects are placed a distance of 1.20 m apart, each exerts an electrostatic force of 21.3 N on the other. What is the charge on each object? (Round the a..
Light moving from glass to air changes wavelength from 448.5 nm to 653.7 nm. find the frequency of the light in air
establish linear speed of the dragster.
A 180kg hoop rolls along a horizontal floor so that the hoop's center of mass has a speed of 0.130m/s. How much work must be completed on the hoop to stop it.
the wire unwinds without stretching or slipping, causing the pulley to rotate. Explain how far must the stone fall so that the pulley has 2.70 J of kinetic energy?
A moving sidewalk 95 m in length carries passengers at a speed of .53 m/s. One passenger has a normal walking speed of 1.24 m/s, If she walks at her normal walking speed on the sidewalk, how long does it take to travel the fill length
Find out the maximum elevation of the ball.
A 35.0-mH inductor has a reactance of 1.80 k. What is the frequency of the ac current that passes through the inductor
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