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A small 0.530-kg object moves on a frictionless horizontal table in a circular path of radius 1.10 m. The angular speed is 2.19 rad/s. The object is attached to a string of negligible mass that passes during a small hole in the table at the center of the circle. Someone under the table begins to pull the string downward to make the circle smaller. If the string will tolerate a tension of no extra than 1590 N, what is the radius of the smallest possible circle on which the object can move?
A electromagnetic monophonic wave of frequency 600*10^12Hz (green light ), propagating in the positive x direction in a vacuum, has an electric feild amplitude of 42.42 V/m. The wave is linearly polarized such that the plane vibration of the electric..
After a shipwreck, a solid steel spoon lies at the bottom of the ocean, 8.00km below the surface. Find the fractional volume change in the spoon due to compression forces
Assume you are swimming in a river while a friend watches from the shore. In calm water, you swim at a speed of 1.25 m/s. The river has a current that runs at a speed of 1m/s.
An object is placed in front of a converging lens in such a position that the lens (f = 13.1 cm) produces a real image located 22.0 cm from the lens. What is the image distance of this new image
Two Styrofoam balls with the same mass m = 9.5 10-8 kg and the same positive charge Q are suspended from the same point by insulating threads of length L = 0.98 m (the figure below). The separation of the balls is d = 0.026 m. What is the charge Q?
Between 1911 and 1990, the top of the leaning bell tower at Pisa, Italy, moved toward the south at an average rate of 1.2 mm/y. The tower is 55 m tall. In radians per second, what is the average angular speed of the tower's top about its base?
A large storage tank, open at the top and filled with water,develops a small hole in its side at a point 15.4 m below the water level. If the rate of flow from the leak is equalto 2.80*10-3 m3/min, determine thespeed at which the water leaves the ho..
A 145 g baseball is dropped from a tree 11.0 m above the ground. If it actually hits the ground with a speed of 8.00 m/s, what is the magnitude of the average force of air resistance exerted on it
Three boxes are connected by light strings. The force pulling on the third box is 30 N. What is the tension between box 2 and box 3
Three point charges, -4.9 x 10-9 C, -9.7 x 10-9 C, and +7.1 x 10-9 C, are fixed at different positions on a circle. What is the radius of the circle
X rays with a wavelength of 0.14 nm undergo first-order diffraction from a crystal at a 70^\circ angle of incidence. What is the angle of second-order diffraction
a student stands at the edge of a cliff and throws a stonehorizontally over the edge with a speed of 18.0 m/s. with what speed and angle of impact does the stone land
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