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A 12 gram CD with a radius of 6.0 centimeter rotates with an angular speed of 33rad/s.
Estimate what is its kinetic energy?
Estimate what angular speed must the CD have if its kinetic energy is to be twice?
Planet-X has a mass of 3.79×1024 kg and a radius of 5640 km. What is the First Cosmic Speed i.e. the speed of a satellite on a low lying circular orbit around this planet, what is the radius of the synchronous orbit of a satellite
A free electron and a free proton are exactly 1.2cm apart. Find the magnitude of the acceleration of the proton
During the investigation of traffic accident police find skid marks90metres long and the final velocity to be zero. Estimate the speedof the car when the brakes were applied
A weather emergency siren is mounted on a tower, 117 meters above the ground. On one hand, you would like to make the siren very loud so that it will warn as many people as possible.
A sphere of radius R = 0.325 m and uniform charge density -151 nC/m3 lies at the center of a spherical, find the magnitude of the electric field at the following radial distances from the center of the charge distribution
A converging lens has a focal length of 15.5 cm If it is placed 72.5 cm from an object, at what distance from the lens will the image be
A train engine weighs 5 times as much as aflatbed car. If the engine coasts at 3 km/hr into the boxcarthat is initially at rest and becomes coupled to the boxcar, how fast do the two move after the inelastic collision?
A rectangular loop is located next to a long straight wire carrying a current of 30.0 A. What is the direction of the net force on the loop
A car parked in the sun absorbs energy at a rate of 590 watts per square meter of surface area. The car reaches a temperature at which it radiates energy at this same rate. Treating the car as a perfect radiator (e = 1), discover the temperature.
small metal bead, labeled A, has a charge of 26 . It is touched to metal bead B, initially neutral, then that the two beads share the 26 charge, but not required equally. When the two beads are then placed 5.0 apart, force between them is 5.4×10-..
calculate the overall magnification of a compound microscope that uses an objective lens with a focal length of 0.50 cm
You've been given the task of designing a "water couch"-that one could lie on, floating on a lake, What minimum volume must the slab have so that a 45 kg teenager can lie on top of the slab without getting wet
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