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Object A has an emissivity of 0.95; and its temperature is 25 degrees C At what temperature (in degrees C) does object B, whose emissivity is 0.50, emit radiation at the same rate as object A if both objects have the same surface area?
A block of mass 5 kg hangs on a spring. When a second block with an identical mass of 5 kg is tied to the first, the spring stretches an additional ho = 1.5 m. What is the maximum speed attained by the remaining block
A 5.0 kg shell is fired vertically upward. At its max height of 350.0 m, it explodes into 3 pieces. A 1.0 kg chunk lands 15.0 m away, where does the third piece land
On his honeymoon, James Joule attempted to explore the relationships among various forms of energy by measuring the rise of temperature of water which had fallen down a waterfall on Mount Blanc. What maximum temperature rise would one expect for a wa..
A force vector has a magnitude of 577 newtons and points at an angle 43o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
The EV-1 electric car made use of storage batteries as its sourceof energy. The car is powered by 26 batteries, each 12V, 52Ah(amp-hours). determine the hors power required
A small package is fired off Earth's surface with an unknown launchspeed at a 42.0^\circ angle with the local horizontal. What was the launch speed of the package
A bicyclist rides 3.01 km due east, while the resistive force from the air has a magnitude of 7.71 N and points due west. Find the work done by the resistive force during the round trip
suppose now that the air carts below are both moving to the right initially. the cart to the left has a mass m1 and an
A puck on a frictionless, horizontal air table is attached to a string that passes down through a hole in the table. what is the new speed of the puck
suppose you wish to fabricate a uniform wire out of 2.30 g of copper. if the wire is to have a resistance of r 0.500
An infinitely long cylinder has a circular cross section of radius a and its axis along the z axis. A steady current I is distributed uniformly over the cross section and is in the positive z direction. Please, read the document carefully, it ..
a baseball has mass 0.145 kg.a if the velocity of a pitched ball has a magnitude of 50.0 ms and the batted balls
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