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A circular plastic disk of radius R, carrying a surface charge density? = ks, is rotating at constant angular velocity ? , where k is a constant and s is the coordinate distance from the axis of rotation. Find the magnetic moment of the rotating disk.
It stops 90 cm from where you free it. The spring steady is 370 N/m. What is the coefficient of kinetic friction between the block and the table.
A 1128 kg car and a 2210 kg pickup truck approach a curve on the expressway that has a radius of 272 m. A) At what angle should the highway engineer bank this curve so that vehicles traveling at 72.9 can safely round it regardless of the condition..
A car traveling at 21 {rm m/s} runs out of gas while traveling up a 25^circ slope. How far up the hill would it coast before starting to roll back down.
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, and its diameter 1.28 cm. 1-Find the volume of the cylinder. 2-Calculate the probable percent error in the length. 3-Calculate the probable percent..
An 80 kg spacewalking astronaut pushes off a 640 kg satellite, exerting the 100N force for the 0.50 s it takes him to straighten his arms.
A train has the length of 114 m and starts from rest with a constant acceleration at time t = 0 s. At this instant, a car just reaches the end of the train.
The clarinet is well modeled as a cylindrical pipe that is open at one end and closed at the other. Find the wavelength and frequency of the third normal mode of vibration
Kinetic energy KE has dimensions kg · m^2/s^2. It can be written in terms of the momentum p and mass m as KE=p^2/2m. (a) Determine the proper units for momentum using dimensional analysis. (Use the following as necessary: kg, m, and s.)
A large plane having uniform charge density has an electric field just outside the plane that points directly toward the plane with magnitude 1.05×104N/C
determine the torque about the axis immediately after the bug lands on sphere.
what is the net workdone on the weights.A child slides down a hill on a toboggan with an acceleration of 1.8 m/s2. If she starts at rest, how far has she traveled after following lengths of time.
If a person can jump a maximum horizontal distance (by using a 45° projection angle) of 2.2 m on Earth, what would be his maximum range on the Moon, where free-fall acceleration is g/6 and g = 9.80m/s2.
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