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An aluminium cup contains 225 g of water and a 40 g copper stirrer, all at 27°C. A 430 g sample of silver at an initial temperature of 87°C is placed in the water. The stirrer is utilized to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Compute the mass of the aluminium cup.
An electromagnet produces a magnetic field of 0.550 T in a cylindrical region of radius 2.40 cm between its poles. What magnitude of force is exerted on the wire
A 76.2-kg skier rides a 2520-m-long lift to the top of a mountain. find the change in the skier's gravitational potential energy
You are walking along a small country road one foggy morning and come to an intersection. While you are crossing, you hear an ambulance siren, At what speed is the ambulance traveling
Imagine a very long, uniform wire that has a linear mass density of 0 . 0012 kg / m, What is the magnitude of the current in the wire that keeps it levitated just above the ground
A block of mass 0.680 kg is pushed against a horizontal spring of negligible mass until the spring is compressed a distance x
A typical helium nucleus consists of two protons and two neutrons. What is the electric force between the nucleus and one of the electrons orbiting the nucleus
question1a roller coaster car moves 248 ft horizontally and then rises 121 ft at an angle of 30deg above horizontal. it
A ski gondola is connected to the top of a hill by a steel cable of length 620 and diameter 1.7. What is the speed of the pulse
a 65 kg person throws a .045 kg snowball forward with a speed of 30 ms. a second person with a mass of 60 kg catches
A car traveling at 30 m/s runs out of gas while traveling up a 20° slope. How far up the hill will it coast before starting to roll back down
An attacker at the base of a castle wall 3.63 m high throws a rock straight up with speed 8.80 m/s at a height of 1.51 m above the ground. Find the change in speed of a rock
Two stretched cables both experience the same stress. The first cable has a radius of 3.1x10-3 m, and is subject to a stretching force of 370 N. Determine the stretching force on the second cable
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