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A cube of aluminum (Cp = 0.897 J/g•K) has a temperature of 325 K. It is placed in a beaker of cold water. If the aluminum cools to 301 K as the water absorbs 815.7 J of heat, what is the mass of the cube?
Three identical charges q form an equilateral triangle of side a, with two charges on the x axis and one on the positive y axis. Find an expression for the electric field
A 7.0 centimeter diameter horizontal pipe gradually narrows to 5.6 centimeter. Evaluate what is the volume rate of flow
One of the wavelengths of light emitted by hydrogen atoms under normal laboratory conditions is at ?0 = 656.3nm in the red portion of the electromagnetic spectrum, How fast are the emitting atoms moving relative to the earth
A horse ran the Kentucky Derby with times of 25.2 s, 24.0 s, 23.8s, and 23.0 s for the quarter mile. Discover his average speed through each quarter-mile segment.
Near San Francisco, where the vertically downward component of the earth's magnetic field is 4.7 multiply.gif 10-5 T, Find the emf induced between the two sides of the car
What is the resultant velocity of the motor boat. What distance downstream does the boat reach opposite shore.
The current through two identical light bulbs connected in series is 0.25 amps. The voltage across both bulbs is 100 volts. Find the resistance of a single light bulb.
The outer surface of a skier's clothes of emissivity 0.700 is at a temperature of 7.40° C. Find the rate of radiation if the skier has a surface area of 1.50 m2
An engineer must design a curved exit ramp for a highway in such a way that a car, at what angle with respect to the horizontal must the curve be banked
Sam, whose mass is 74 kg, straps on his skis and starts down a 67-m-high, 20 ^\circ frictionless slope. Find Sam's speed at the bottom using work and energy
questionone of ways that a forensic scientist can figure out the make and model of a car from a ldquohit and runrdquo
Estimate the average force exerted by a shot-putter on a 7kg shot if the shot is moved through a distance of 2.6m and is released with a speed of 10m/s
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