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Assume you knew some unstable particles have a half life of 1.00 seconds when not moving but had a half-life of 5.00 seconds while in a particle accelerator. How fast must the particles have been traveling in the accelerator? Answer as v/c. I think the answer is about 0.9 c.
A 125 g wire is held under a tension of 218 N with one end at x = 0 and the other at x = 12.0 m. At time t = 0, pulse 1 is sent along the wire from the end at x = 12.0 m. At time t = 25.5 ms, pulse 2 is sent along the wire from the end at x = 0. A..
A 1.80 MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward sound receiver as the heart beats.
A cylindrical storage tank has a radius of 1.22 m. When filled to a height of 3.71 m, What is the density of the solvent
A cylindrical iron wire of length 16 m is connected to the terminals of a .3 V battery. What is the diameter of the wire, in mm
Spider-Man attempts to save passengers on an out-of-control train using his web-slinging power. If the train (m = 137,000 kg) was at first travelling at 33m/s and he needs to stop it within 46 s, what is the magnitude of force he must provide.
A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from rest and is pulled up a mine shaft by a cable connected to a winch, What maximum power must the motor provide
Suppose a child drives a bumper car head on into the side rail, which exerts a force of 4000 N on the car for 0.200 s. What impulse is imparted by this force
Three protons are at the vertices of an equilateral triangle 0.800nm on each side. What is the potential energy of this set of charges
A 300-kg elevator is raised with a constant speed through a vertical distance of 100 m in two minutes. What is the useful output power of the hoist
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
The rms speed of a sample gas is increased by 2 %, What is the percent change in the temperature of the gas
A farsighted man uses eyeglasses with a refractive power of 3.57 diopters. Wearing the glasses 0.026 m from his eyes, What is the correct contact lens prescription
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