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A ball on the end of a string is revolved at a uniform rate in a vertical circle of radius 72.0 centimeter. if its speed is 4.00 m/s, and its mass is .300 kilogram,
(a) find the tension in the string when the ball is at the top of its path,
(b) Find the tension in the string when the ball is at the bottom of its path.
a generator is designed to produce a maximum emf of 170 v while rotating with an angular speed of 3600 rpm. each coil
A horizontal 5-cm diameter water jet with a velocity of 18 m/s impinges normally upon a vertical plate of mass 1000 kg. The plate rides on a nearly frictionless track and is initially stationary. When the jet strikes the place, the plate begins to..
A small mass is placed a distance r from the center of a flat, circular disk that can rotate about its center. At what frequency of rotation will the mass start to slide off
We have a hollow metallic sphere with charge -5.0 µC and radius 5.0 cm. What charge now rests on the outer surface of the sphere
A 75 kg block is being pulled up a 25 degree slope by a force of 200N which is parallel to the slope. What is the acceleration of the block
How much time passes by they collide
A cell membrane has a surface area of 1.00 x 10-7 m2, a dielectric constant of 5.17 and a thickness of 8.17 nm. How many positive ions are there on the outside of the membrane
Some clear food wraps can be tightly stretched over a container and folded down the sides and they will retain the tension and complete secure of the container. The food wraps stick. How do they do these.
Light with a wavelength of 616 nm passes through a slit 7.14 μm wide, Find the linear distance on the screen from the central bright fringe to the first bright fringe above it
at three corners of a rectangle length 11.8 cm height 5.9 cm the following charges are located q1 upper left corner q2
A 40.0 kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 18.0 m, What is the centripedal acceleration of the child
A lead bullet with a mass of 0.02 kg traveling at 209 m/s strikes an armor plate and comes to a stop. what is the temperature change
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