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A 5.9 g bullet leaves the muzzle of a rifle by a speed of 330 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.81 m long barrel of the rifle?
If the hypotenuse of a right triangle is 6.00cm long, and the opposite is 4.00. What is the angle facing the opposite
An illusionist causes a valuable piece of jewelry apparently to disappear by dropping it in a pool of water directly under the center of a circular platform floating on the surface. Find the minimum diameter of the platform that would prevent the ..
A 4.0m deep swimming pool measures 28m by 11m. It's filled with fresh water. What force does the water exert on the bottom of the pool
one mole of an ideal gas is compressed isothermally but irreversibly at 130? from 2.5bar to 6.5bar in a piston device.
A molecule of DNA (deoxyribonucleic acid) is 2.28 µm long. Determine the effective spring constant of the molecule
The liquid-drop model of the atomic nucleus suggests high-energy oscillations of certain nuclei can split the nucleus into two unequal fragments plus a few neutrons, Calculate the electric potential energy (in electron volts) of two spherical fragm..
A certain red giant star has a luminosity of 100,000 times that of the Sun and is located 600 light-years from Earth. calculate the rate of interstellar extinction in the direction of the star
An airplane has a mass of 28,000 kg and takes off under the influence of a constant net force of 44,000 N
What is the total work done on the block by the applied force as the block moves a distance 10-m up the incline.
compass needle points 25 degrees E of N outdoors. However, as it is placed 17 cm to the east of a vertical wire inside a building it points 61 degrees E of N. What is the magnitude of the current in the wire? The earth field there is 0.50X10^-4 T ..
problem 1 a box is lowered by a rope at a constant speed. if its mass is 20 lb its downward speed is 3 fts and the
2 kg mass is slidingover a frictionless surface with a velocity of 7 m/s when itenocunters a frictionless ramp as shown. what are the final velocties of the block and ramp
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