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A 16.5 kg gold bar at 26.0°C is placed in a large, insulated 0.800 kg glass container at 15.0°C with 2.00 kg of water at 25.0°C. Calculate the final equilibrium temperature.
A large cylindrical water tank is mounted on a platform with its central axis vertical. The water level is 3.75 m above the base of the tank, and base is 6.50 m above the ground. A small hole 2.23 mm in diameter has formed in the base of the tank. Bo..
A student eats a candy bar that may give 1.8 * 10^6 joules of energy. if the student has a mass of 60 kg, how high will he have a climb a ladder to offset completely the energy contained in the candy bar.
A 4.20 kg model rocket is launched, expelling 57.0 g of burned fuel from its exhaust at a speed of 675 m/s. What is the velocity of the rocket after fuel has burned.
the second person is initially at rest. Illustrate what are the velocities of the two people after the snowball is exchanged? Disregard the friction between the skates and the ice.
A 46 kg skater is standing still in front of a wall. By pushing against the wall she propels herself backward with a velocity of - 1.2 m/s. Her hands are in contact with the wall for 0.8 s. Ignore friction and wind resistance.
Three equal point charges, each with a charge of 1.80?C , are placed at the corners of an equilateral triangle whose sides have a length of 0.550m, What is the potential energy of the system
The image behind a convex mirror (radius of curvature = 74 cm) is located 22 cm behind the mirror. What is the magnification of the mirror?
A person, with his ear to the ground, sees a huge stone strike the concrete pavement. A moment later two sounds are heard from the impact: one travels in the air and the other in the concrete, and they are 6.60s apart. How far away did the impact ..
IP Halley's Comet Halley's Comet, which passes around the Sun every 78 years, has an elliptical orbit. When closest to the Sun (perihelion) it is at a distance of 8.823 x 10^10 m and moves with a speed of 54.6 km/s. The greatest distance between Hall..
At some automobile toll-collecting stations, a thin metal wire sticks up from the road and makes contact with cars before they reach the toll collector. What is the purpose of this wire?
What is current temperature and peak wavelength What is the proper description of their situation
A 100 g granite cube slides down a 40* frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 200g steel cube at rest. How high above the table must the granite cube be released to give the steel cube a spee..
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