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A tungsten wire has a radius of 0.070 mm and is heated from 20.0 to 1330 oC. The temperature coefficient of resistivity is ? = 4.5 x 10-3 (Co)-1. When 170 V is applied across the ends of the hot wire, a current of 2.0 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire.
A 188.0 g piece of lead is heated to 81.0oC and then dropped into a calorimeter containing 692.0 g of water that initally is at 21.0oC.
A hollow cubical box is 0.30 m on an edge. What is the depth of the water in the box just at the instant that water from the lake begins to pour into the box from the lake
Two cylindrical metal rods-one copper, the other lead-are connected in parallel with a temperature of 22.0 C at one end, what is the diameter of the copper rod
The Relativistic Heavy Ion Collider (RHIC) at Brookhaven is colliding fully ionized gold (Au) nulcei accelerated to an energy of 200 GeV per nucleon, What is the speed of each Au nucleus just before collision
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m, What is the weight of the bananas in newtons
From colonial times through the 1960s, the primary mode of mental illness treatment was institutional. What factors were responsible for this shift
A rocket moves upward, starting from rest with an acceleration of 29.9 m/s2 for 3.31 s. It runs out of fuel at the end of the 3.31 s but does not stop. Evaluate how high does it rise above the ground?
The greatest ocean depths on earth are found in the Marianas Trench near the Philippines, where the depth of the bottom of the trench is about 11.0 km. Calculate the pressure due to the ocean at a depth of 9.5 km
In a car collision, the driver's body must change speed from a high value to zero. This is true whether or not an airbag is used, How does it reduce injury
What must be the magnifying power of the eyepiece if the total magnification of the specimen is 100X
A guitar string is 90 cm long and has a mass of 3.6g . The distance from the bridge to the support post is L=62cm, What is the fundamental frequency of this string
A bullet of mass m = 25 g is fired into a wooden block of mass M = 4.5 kg. The block is attached to a string of length 1.5 m. The bullet is embedded in the block, causing block to then swing.
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