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Suppose the grand unified theory (GUT) was correct and the half-life of a proton was 1.2Af-1035y.
Part A. Estimate the decay rate of a liter of water in decays per second. Express your answer using two significant figures.
Part B. Estimate the decay rate of a liter of water in curies.Part C. How does this compare to a small (by laboratory standards) radioactive source of one microcurie?
A 0.540-kg object attached to a spring with a force constant of 8.00 N/m vibrates in simple harmonic motion with an amplitude of 11.2 cm. Calculate the maximum value of its speed
When laser light of wavelength 632.8nm passes through a diffraction grating, the first bright spots occur at +/- 17.8 degrees from the central maximum. At what angles do the third bright spots occur
a 0.40kg basketball is thrown horizontally against a board with a velocity of 20m/sec. If the ball rebounds with a speed of 15m/sec. What is the impulse of the ball
A stone is dropped from rest from the roof of a 100-m high building; 2.00 s after that, a second stone is thrown straight down with initial speed v0, and the second stone passes the first stone 21.6 m above ground.
The air inside a bicycle tire pump has 172 joules of work done on it as 64.8 joules of heat is conducted away from it
A disk and a sphere are released simultaneously at the top of an inclined plane. They roll down without slipping. Which will reach the bottom first
A solenoid has a 3 cm x 3 cm square cross section, 1800 turns, a length of 75 centimeter and carries a 12 Amp current. Find what is the magnetic field inside the solenoid
Find out the effective coefficient of kinetic friction
question a gass has 100 j of energy in the form of heat is transfered to a system and the system does 150 j of work
Hot air balloons contain a fixed volume of gas. When the gas is heated, it expands, and pushes some gas out at the lower open end. As a result, the mass of the gas in the balloon is reduced.
A three level laser has energy levels E 1=1.50 eV, E 2=2.50 eV, and E 3=3.50 eV. Level E 2 is the metastable state. What is the lasing wavelength
A 10.0 kg bomb is at rest. It explodes into two chunks. One piece of mass=3.00 kg goes east at 100 m/s. What is the speed of the other chunk
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