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Find what mass of water at 21°C must be allowed to come to thermal equilibrium with a 1.80 kilogram cube of aluminum initially at 1.50 × 102°C to lower the temperature of the aluminum to 60.5°C?
__________kg
An illuminated slide is held 70 cm from a screen. How far from the slide (among the slide and the screen) should a lens of focal length 7.1 cm be placed to form an image of the slide's picture on the screen? (Give the smaller of the two possible answ..
A worker is to paint the walls of a square room 8.00 fthigh and 12.0 ft along each side. What surface area in squaremeters must she cover
question1a traffic light weighing 1.20 x 102 n hangs from a vertical cable tied to two other cables that are fastened
A 3.0kg mass initially traveling in the +x direction at 3.0m/s collides with a 2.0kg mass traveling in the -x direction at 3.0m/s. find The coefficient of restitution between the two masses
A 1.0 µC point charge and a 7.0 µC point charge are a distance L apart. Where must a third point charge be placed so that the electric force on that third charge is zero? (Utilize the following as necessary: L.)
A back-reflection Laue pattern is made of an aluminum crystal at 50 kv. What orders of reflection are present in the beam diffracted by these planes
A small ball of mass, m = 8.60 × 10-9 g, has acquired an excess charge. The ball is then placed between two parallel plates spaced x = 3.45 mm, How many electrons did the ball gain or lose
you lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. the ray reflects from
given a sargent ideal gas cycle. All process ar quasi-static, and the heat capacities are constant. Prove that the thermal efficiency of an engine performing a cycle
Students in a fraternity house want to be able to spray water 25 m across their neighbor's yard onto a patio. What size nozzle do they need
question traveling at a speed of 17.3 ms the driver of an automobile suddenly locks the wheels by slamming on the
A line of charge with uniform density of 28.0 nC/m lies along the line y = -15.0 cm, between the points with coordinates x = 0 and x = 32.0 cm
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