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What mass of water at 23.0°C should be allowed to come to thermal equilibrium with a 1.57-kg cube of aluminium initially at1.50 multiplied by 102 °C to lower the temperature of the aluminium to 69.8 °C? Suppose any water turned to stream subsequently re-condenses.
An intergalactic rock star bangs his drum every 1.50 s. How fast is the rock star moving relative to the earth
What is the impact speed when a car moving at 300 km/h bumpsinto the rear of another car traveling in the same direction at 97km/h
three capacitors each of capacitance 9 pf are connected in series.a what is the total capacitance of the combination?b
you're helping with an experiment in which a vertical cylinder will rotate about its axis by a very small angle. you need to devise a way to measure this angle. you decide to use what is called an optical lever. How many degrees has the cylinder ro..
A spider hangs from a strand of silk whose radius is3.6x10-6 m. The density of the silk is 1500kg/m3. When the spider moves, waves travel along the strand of silk at a speed of 210 m/s. decide the mass of the spider.
The flywheel in a car is a solid cylinder with a mass of 100 kg, a radius of 11 cm, and a length of 5.0 cm. What is the kinetic energy of the cylinder
Two coils of wire are placed close together. Initially, a current of 2.27 A exists in one of the coils, What is the mutual inductance of the two-coil system
A cube of ice is taken from the freezer at -8.5°C and placed in a 104 g aluminum calorimeter filled with 309 g of water at room temperature of 20°C. What was the mass of the ice cube
A thick-shelled hollow metal sphere contains in its cavity 2.0 nC of charge. What is the flux emanating from the outer surface
In 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift.
drop a rock into a well. You hear the splash 2.40 s after you release the rock from rest. The speed of sound in air at the ambient temperature is 336 m/s. How far below the top of the well is the surface of the water?
Steel train rails are laid in 12.2m -long segments placed end to end. The rails are laid on a winter day when their temperature is -2.00 oC. what is the stress in them on a summer day when their temperature is 33.0 oC
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