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A cylinderical shaped metal rod is used to conduct heat. Whenthe temperature at one end is 100 degree Celsius and at the otherend is 20 degree Celsius, heat is transferred at a rate of 16 J/s.The rod is then stretched uniformly to twice its original length.If again it has ends at 100 degree Celsius and 20 degree Celsius, at what rate will heat be transferred between it ends?
21.18 g of copper pellets are removed from a 286°C oven and immediately dropped into 198.5 mL of water at 13°C in an insulated cup
If it takes you about 2 minutes to fill your 12 gal (or 0.48 m3) gas tank. Estimate the velocity of the gas as it leaves the nozzle
When a satellite orbits the earth in a non-circular orbit which of the following is true.
A rope connects a 25 kg mass sitting on a 30 degree incline with a hanging mass of 90 kg, the rope passes over a 12kg disk-shaped pulley that has a radius of 0.250m. When the system is released, the heavier mass descends, the rope turns over the p..
The index of refraction of a certain liquid is 1.6. What is the critical angle for a light ray traveling in this liquid toward a flat layer of air above it
Given that the radius of the Moon is roughly one-quarter that of the Earth, find the mass of the Moon in terms of the mass of the Earth
When certain light rays pass from a vacuum into a block of an unknown material, What is the speed of light inside the block
A small conductive rod of length 1.4 m moves with a constant velocity v=11 m/s in a direction parallel to a long wire carrying a current of 34 A. Calculate the electric potential induced across the rod
An engine absorbs 1.69 kJ from a hot reservoir at 277 °C and expels 1.24 kJ to a cold reservoir at 27 °C in each cycle. What is the power output of the engine if each cycle lasts 0.298 s
question1a truck is carrying a steel beam of length 17.0 m on a freeway. an accident causes a beam to be dumped off the
I hold a flat mirror 24.6 cm in front of my face. There is a freckle on my face 1 mm in diameter. Find the angular size of the freckle on the image of my face as viewed by my eye
q1. two point charges q1 -10.0 nc and q2 20.0 nc are 15 cm apart on the x-axis. what is an electric potential at the
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