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A 0.6 kg block of Aluminum at 80 Celsius and a 0. 3 kg block ofcopper at 70 Celsius are placed inside 1.2 liters of water at 20Celsius. The system is thermally isolated. What is the final temperature after the system has equilibrated?
The speed of a certain electron is 350 km/sec. If the uncertainty in its momentum is 0.010%, what uncertainty in its location must be tolerated
Calculate the probability of an electron in the ground state of the hydrogen atom being inside the region of the proton. (For purposes of calculation, use a proton radius r = 0.990e-15 m. Hint: Note that r
An electric dipole has opposite charges of 5.0x10^-15 C separated by a distance of .40mm. Determine the magnitude of the torque exerted on the dipole by the electric field
Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 2.2 cm in diameter, calculate the potential difference between its feet
The ends of a thin bar are maintained at differenttemperatures. The temperature of the cooler end is 13°C, find the length of the bar
Gas is contained in an 6.5 L vessel at a temperature of 20°C and a pressure of 9.8 atm. How many molecules are in the vessel
What must be the temperature of the cold reservoir in order to increase the efficiency to 29.0%
Far in space, where gravity is negligible, a 485kg rocket traveling at 95.0m/s fires its engines. It shows the thrust force as a function of time. The mass lost by the rocket during these 30 s is negligible.
A parallel plate capacitor has square plates with sides of length 20 cm. The distance between the plates is 1 mm. What is the electric field between the plates
A merry-go-round is shaped approximately as a disk and has a radius of 2.1m and a mass of 172kg. A girl of mass 35kg, who is initially standing still next to the merry-go-round, steps onto it and rides at the outer edge. What is the new angular vel..
An object is placed 15 cm from a converging lens with a 5.0-diopter refractive power. At what distance from the object will the image be located
a solid ball and a hollow ball each with a mass of 2.29 kg and radius 0.115 m start from rest and roll down a ramp of
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