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(a) What is the rate of energy loss in watts per square meter through a glass window 3.8 mm thick if the outside temperature is -5oF and the inside temperature is +72oF?
(b) A storm window having the same thickness of glass is installed parallel to the first window, with an air gap of 7.5 cm between the two windows. What now is the rate of energy loss if conduction is the only important energy-loss mechanism?
Calculate the doppler shift of x rays emitted from shocked silicon in a supernova remnant of the ejected material is moving at 5000 km/sec
An emf is induced in a conducting loop of wire 1.14m long as its shape is changed from square to circular, Find the average magnitude of the induced emf if the change in shape occurs in 4.23s
A merry-go-round starts from rest and accelerates uniformly over 23.5 s to the final angular velocity of 6.55 rev/min.
Two bars of identical mass are at 34 °C. One is made from glass and the other from another substance. What is the specific heat capacity of the other substance
A suspicious-looking man runs as fast as he can along a moving sidewalk from one end to the other, taking 4.00 s. find the ratio of the man's running speed to the sidewalk's speed
suppose you warm up 540 grams of water about half a liter or about a pint on a stove and while this is happening you
there are 2 flat metal plates each of length l and width w. you place a tiny spacer of height 0.700h0 at one end of the
A wire is formed into a circle having a diameter of 10.9 cm and is placed in a uniform magnetic field of 3.17 mT. Find the maximum torque on the wire
A 73 kg canoeist standsi n the middle of her 22 kg canoe. Calculate the distance from the canoeist to the shore
questionone of the methods used to train astronauts for the effects of zero gravity in space is to put them in a
Calculate the length of the transmitter antennain order for it to be exactly one half the wavelength of this transmission frequency
An object is suspended from the bottom end of a spring. With the object in air, the spring exerts upward force Wa= 30 nt. With the object immersed in water, the spring exerts upward force Ww= 20 nt. With the object immersed in Liquid X, the spring..
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