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Two uniform solid spheres have the same mass of 1.95 kg, but one has a radius of 0.230 m while the other has a radius of 0.859 m. Each can rotate about an axis through its center.
a) What is the magnitude? Of the torque required bringing the smaller sphere from rest to an angular speed of 317 rad/s in 15.5 s?
b) What is the magnitude F of the force that must be applied tangentially at the sphere's equator to provide that torque?
c) What is the corresponding value of F for the larger sphere?
A bowling ball (mass = 7.2 kg, radius = 0.14 m) and a billiard ball (mass = 0.47 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
a two forces are given as a 2n and b 3n. the angle between the two forces 110 degrees. find the magnitude of the
Long, long ago, on a planet far, far away, a physics experiment was carried out. First, a 0.250- ball with zero net charge was dropped from rest at a height of 1.70. The ball landed 0.400 later. Next, the ball was given a net charge of 7.85 and dropp..
An object that is 37 cm in front of a convex mirror has an imagelocated 25 cm behind the mirror. How far behind the mirror is the image located when the object is 30 cm in front of the mirror?
A 10.0-V battery is connected to a 120-(ohm) resistor. Ignoring the internal resistance of the battery, calculate the power delivered to the resistor
A 0.17 kg baseball is launched from the roof of a building 12m above the ground. What is the speed of the ball as it strikes the ground
a. a 7-ohm resistor has a potential difference of 12 v across it. what current flows through the resistor?b. what is
Given two parallel plate capacitors 1 and 2. They both have a plate-charge Q and plate area A. Determine the ratio of the polarized charge q1/q2
the total liftoff mass of the space shuttle orbiter is 11000kg. the combined thrust of the three on board liquid fuel
A 4.0-m-long iron bar of uniform cross section is held perpendicular to the wall by a wire from the end of the bar to the wall, what is the magnitude of the vertical component of force produced by the wall
A satellite has a mass of 6480 kg and is in a circular orbit 6.12 x 104 m above the surface of a planet. The period of the orbit is 2.00 hours. What is the true weight of the satellite when it is at rest on the planet's surface
You have 33 tuning forks that oscillate at close but different frequencies. What are the (a) maximum and (b) minimum number of different beat frequencies you can produce by sounding the forks 2 at a time, depending on how the frequencies differ?
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