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A brick is initially 7.72 cm high and an aluminum can is initially 7.73 cm high. By how much should their temperatures be raised in order for the brick and the can to have accurately the similar height?
Light of wavelength 550nm in air is found to travel at 1.96*10^8 m/s in a certain liquid. Determine the wavelength of the light in the liquid
Aingly-ionized lithium has a nucleus of charge +3e and two electrons. Use the variational principle to estimate the ground-state energy. Now consider a nucleus of charge Ze with two electrons. Use the variational principle to estimate the ground-st..
A car with its parking brake on starts sliding down an extremely slippery icy h=6 m high embankment into a level snowy muddy field with a coefficient of kinetic friction of 0.8
In the Bohr-model hydrogen atom the single electron orbits the nucleus in a circle of radius a= 5.3*10 (-11) making f= 6.6*10( 15) revolutions each second
A large storage tank, open to the atmosphere at the top and filled with water, calculate The diameter of the hole
Consider a uranium nucleus to be a sphere of radius R = 7.4x10^-15 m with a charge of 92 e distributed uniformly throughout its volume. What is the electric force exerted on an electron
An object 25 cm from a convex mirror is observed to produce an image 13.6 cm behind the mirror. What is the focal length of the mirror
A firefighting crew uses a water cannon that shoots water at 29.0m at a fixed angle of 52.0 degrees above the horizontal. How far from the building should they position their cannon
A rectangular loop of wire carrying a 4.0-A current is placed in a magnetic field of 0.60 T. What is the area of this loop
In extremely cold weather conditions where the inside thermostat is set to 27 C and the outside temperature is -20 C, your 1200 square ft house might lose heat through the walls at a rate of 4000 W.
to combat wasteful habits we often speak of "conserving engery", by which we mean turning off lights, find the difference in energy conservation and conserving energy
You rev your car's engine to 2900 rpm (rev/min). What is the period of the engine
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