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The tension in a guitar string is doubled. Does the frequency of oscillation also double? If not, by what factor does the frequency change? Specify whether the change is an increase or a decrease.
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 1.80e28 kg and 1.60e3 m. Find the density of such a star
Two blocks connected by a string are pulled across a rough horizontal surface by a force applied to one of the blocks, what is the magnitude of the applied force
An electron with kinetic energy 1.52 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 22.0 cm, Find the frequency of circling
A hollow cubical box, 0.28 meter on a side, with walls of negligible thickness floats with 30 percent of its volume submerged. Find what mass of water can be added to the box before it sinks
plan a free-body diagram for the charge.
The pilot of an airplane executes a loop-the-loop maneuver in a vertical circle. What is the pilot's apparent weight at the lowest point if his true weight is 160 lb
The intensity of solar radiation near the earth is 1.4 × 103 W/m^2. What force is exerted by solar radiation
A 370-g block is dropped onto a vertical spring with spring constant k=3.2 N/cm. While the spring is being compressed, what work is done by the block's weight
Suppose you are a Medieval knight attacking a castle with a cannon. The ball leaves the cannon with a speed of 44.3 m/s. Evaluate the time of flight of the cannon ball
An electron has a speed of 0.6 c. Discover the speed of a proton that has the same kinetic energy as the electron. Discover the speed of a proton that has the same momentum as the electron.
A spring-loaded toy gun shoots a 18 g plastic ball. What is the launch speed if the spring constant is 4.4×104 N/m^3 and the spring is compressed 14 cm
Find how far and in what direction should a cellist move her finger to adjust a string's tone from an out-of-tune 448 Hertz to an in-tune 440 Hertz
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