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What will be the equilibrium temperature when a 262 g block of copper at 276°C is placed in a 175 g aluminium calorimeter cup containing 813 g of water at 12.9°C?
A straight, stiff wire of length 1.00 m and mass 21g is suspended in a magnetic field B = 0.58T. The wire is connected to an emf. How much current must flow in the wire and in what direction so that the wire is suspended and the tension in the sup..
A 10 gauge copper wire carries a current of 24 A. Assuming one free electron per copper atom, calculate the magnitude of the drift velocity of the electrons
a hockey puck slides off the edge of a table with an initial velocity of 22.0 ms and experiences no air resistance. the
A wire is stretched between two posts. Another wire is stretched between two posts that are four times as far apart. What would be the speed of the wave on the longer wire
the shaft of a pump starts from rest and has an angularacceleration of 3.00 rad/s2 for 18.0s. find the angle through which the shaft has turned
A uniform cylindrical can rolls up a slope at an initial linearvelocity of 1.5m/s. Assuming μk = 0.106 and θ=11.0o, how high up the slope will the can roll
this question relates directly to the vorperian and kent 2007 article vowel acoustic space development in children a
1. what is the avg total energy density in the wave given freq6.15e14 hz travelling in a vacuum c3.0x108 the wave
An observer, whose eyes are 1.92m above the ground, is standing 31 m away from a tree. The ground is level and the tree is growing perpendicular to it. The observer's line of sight with the treetop makes an angle of 21° above the horizontal. How t..
In a ballistics test, a 23-g bullet travelling horizontally at 1300 m/s goes through a 40.0 cm-thick 450-kg stationary target and emerges with a speed of 900m/s. The target is free to slide on a smooth horizontal surface.
A 50.0 gram chunk of ice is taken from a freezer at -20 C, What is the minimum amount of stove energy required
A lunch tray is being held in one hand, as the figure illustrates. The mass of the tray itself is 0.167 kg, and its center of gravity is located at its geometrical center. On the tray are a 1.11-kg plate of food and a 0.262-kg cup of coffee.
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