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A very old specimen of wood contains 10^12 atoms of carbon:
a) How many C-14 atoms did it contain in the year of 9474 B.C.?
b) How many C-14 atoms did it contain in 2004 A.D.?
On a workday the average decibel level of a busy street is 74 dB, with 100 cars passing a given point every minute. what is the decibel level of the street
At Canobie Lake Park NH the Starblaster Ride launches riders straight up into the air with a launch speed of 30 m/s, calculate the work done by the nonconservative forces
a 2.55-kg model rocket is launched vertically upward with sufficient initial speed to reach a height of 2.83middot102 m
a long cylinder carries a charge density which is proportional to the distance rom the axis p kr for some constant k.
An engine develops 490 N m of torque at 3750 rev/min. Find the power developed by the engine
When catching a baseball, a catcher's glove moves by 12cm along the line of motion of the ball. If the baseball exerts a force of 477N on the glove, how much work is done by the ball.
The first order line of 589 nanometer light falling on a diffraction grating is observed at 15.5o. Compute how far apart are the slits
In the process of making lead shot, molten lead is drippedinto water. The lead forms small drops that harden to formthe shot. what is the final temperature
A decade before Einstein published his theory of relativity, J.J. Thomson proposed that the electron might consist of small parts, Find the total electric potential energy of this arrangement
A car at the Indianapolis 500 accelerates uniformly from the pit area, going from rest to 350km/h in a semicircular arc with a radius of 210m. Determine the tangential and radial acceleration of the car
A block-spring system oscillates with amplitude of 3.70 cm. The spring constant is 250 N/m and the mass of the block is 0.500 kg.
what is the bragg scattering angle for electrons scattered from a nickel crystal if their energy is each of the
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