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The scale of a spring balance that reads from 0 to 15.0 kg is 12.0 cm long. A package suspended from the balance is found to oscillate vertically with a frequency of 2.00 Hz.
(a) What is the spring constant?
(b) How much does the package weigh?
explain how much charge is on each plate. What is the work done by the field on the electron.
At the upper atmosphere, the Earth receives approximately 1 KW/m^2 of energy from the sun. If the sun emits energy uniformly into space, what will be the sun's total mass loss
how much kinetic energy does each electron have. Blocks of mass m_1 and m_2 are connected by a massless string that passes over the pulley.
A 4.20 kg sphere makes a perfectly inelastic collision with a second sphere that is initially at rest, What is the mass of the second sphere
The mass of a bottom quark is 4.20Gev/c^2 and was found by colliding a beam of protons with a cloud of stationary protons. How fast were they moving
An electron with an initial speed of 4.00×105m/sis brought to rest by an electric field, What was the initial kinetic energy of the electron, in electron volts
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. What is the centripetal acceleration of the ball at 8.28 rev/s
Tarzan spies a 35 kg chimpanzee in severe danger, so he swings to the rescue. What are the frequency and amplitude (in degrees) of Tarzan's swing
A 10 m platform diver during his diving can increase his rotation rate from an initial rate of 1.2 rev/s to a maximum of 3.1 rev/s. what is his moment of inertia at his maximum rotation rate
Two spheres with uniform surface charge density, first with a radius of 7.0cm and the second with a radius of 4.8cm , What is the surface charge density on the first sphere
A person pushes a 21.9-kg shopping cart at a constant velocity for a distance of 23.8 m on a flat horizontal surface. What is the magnitude of the force that the shopper exerts
A ball is thrown from a rooftop with an initial downward velocity of magnitude vo = 5.8 m/s. The rooftop is a distance above the ground, h = 43 m.
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