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A) A cosmologist measures the value of the Hubble constant to be H=27.9 km/s/e6 light years. The reciprocal of H (1/H) provides an estimate of the age of the universe. What value would this cosmologist estimate for the age of the universe? Express your answer in seconds.
B) Express your estimate for the age of the universe in years.
C) Calculate the recession velocity this value of the Hubble constant implies for a star 17*10^(6) lightyears away.
Find the slit width. compute the coefficient of kinetic friction between the slide and the child.
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A neutral conductor contains a hollow cavity in which there is a +100 nC point charge. what is the charge on the exterior surface of the conductor
An object weighs 3300 N. What is the object's mass? An object weighs 3000 lb. What is the object's weight in N? An object weighs 2700 N. What is the object's weight in lb? The mass of a certain elephant is 4,067 kg. (a) Find the elephant's weight in ..
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imagine that you put a block of copper with a mass of 320 g and initial temperature of -35degc into an insulated cup
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