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1) A 565g cube of iron is cooled form the temperature of boiling water to room temperature (20C).
a. How much heat must be absorbed by the cube?
b. If the iron is cooled by dunking it into water at 0C, how much water is needed?
2) A .50kg sample of water is at 15.0C in a calorimeter. A 0.040 block of zinc at 115C is placed in the water. Find the final temperature of the system.
A solenoid is made from a long wire of radius R = 1.00mm. It is wrap on a cylinder of radius 4.00cm and length l = 50cm. how many turns are in a single tightly wound layer?
The present period is 2.36 x 106 s. Assume that the orbit of the Moon is circular. Calculate the ratio of the speed of the Moon in its ancient orbit to the speed that it has today.
Machmer Hall is 400 m North and 180 m West of Witless. Astudent is late for her appointment in Machmer and wants to runthere directly from Witless. What is the distance from Witless to Machmer
Calculate the acceleration of a skier heading down a 10.0 deg, slope, assuming the coefficient of friction for waxed wood on wet snow
The wavelength of an electromagnetic wave is measured to be 1.80 x 10-7 m. What is the frequency of the wave.
an ideal gas is at 30 degrees c. the gas is cooled reducing the thermal energy by 20.what is the new temperature in
A nearsighted sheriff fires at a cattle rustler with his trusty six-shooter. Fortunately for the rustler, the bullet misses him and penetrates the town water tank, causing a leak. how far above the hole is the water level
Calculate the angular momentum of a solid uniform sphere with a radius of 0.130m and a mass of 14.0kg if it is rotating at 6.05rad/s about an axis through its center
A singly charged ion (charge q = +1.60e-19 C) completes four revolutions in a uniform magnetic field, Calculate the mass of the ion in kilograms
A telephoto lens with focal length of 120mm has f-numbers ranging from f/2.8 to f/22, What is the diameter of the lens aperture at f/2.8? in millimeters
According to Keplers 3rd Law, how would a planets orbital period change if the planets. Mass halved? Eccentricity doubled? Distance from the sun quadrupled?
A record was set for stair climbing when a man ran upthe 1600 steps of the Empire State Building in 10 minutes and 59secs. what was his average power output during the limb
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