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A solid sphere is rolling without slipping along a horizontal surface with a speed of 4.50 m/s when it starts up a ramp that makes an angle of 25.0 degrees with the horizontal. What is the speed of the sphere after it has rolled 3.00m up the ramp?
A capacitor has a capacitance of 250 nF and a voltage is placed across it which grows as a function of time as: V(t) = 240 mV/s3 × t3
A golf ball with mass m = 0.07 kg is tied to a massless string of length L = 0.6 m. What the magnitude of the tension in the string
An electron is accelerated from rest through a potential difference that has a magnitude of 2.70 × 107 V. The mass of the electron is 9.11 × 10-31 kg, What is the relativistic kinetic energy (in joules) of the electron
A sonar generator on a submarine on the ocean surface produces periodic ultrasonic waves at a frequency of 2.50 MHz. How deep is the ocean floor
A chimp jumps up from a trampoline and lands on the ground, 1.2 meters below. the total time taken was .095 secons. what is the maximum height above the ground
If one arm of a Michelson interferometer contains a tube 2.5 cm long that is ?rst evacuated and then slowly FIlled with air (n=1.0003)
Moment of inertia Wheel If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning at 0.72rev/s, what is the magnitude of the frictional torque
A 6.2-m radius playground merry-go-round with a moment of inertia of 2400 kg·m2 is rotating freely with an angular speed of 1.5 rad/s. What is the angular speed of the merry-go-round right after the two people have stepped on
Describe, in detail, an experiment in which you could determine the power for a period of several hours. You must be able to tell how to measure the force and the distance to calculate work
A 7.4muC charge and a -4.3mC charge are inside an uncharged sphere. What is the electric flux through the sphere
Calculate the pressure exerted on the skin by an acupuncture needle of radius 0.100 mm applied with a force of 4.80 N
A force of 17 N is applied to the end of a 0.63 m long torque wrench at an angle 45° from a line joining the pivot point to the handle
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