The Tully-Fisher relation is much like the mass-luminosity relationship, except that the galaxy's rotation is used to find its mass; the greater the mass, the faster the rotation rate
Indicate whether the statement is true or false
TRUE
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Ideal Gas Law: A 24.0-L tank contains ideal helium gas at 27°C and a pressure of 22.0 atm. How many moles of gas are in the tank? (R = 8.31 J/mol ? K, 1 atm = 101 kPa)
A. 238 mol B. 138 mol C. 17.5 mol D. 21.4 mol E. 76.0 mol
Supernova remnants ________.
A. may contain up to 10 solar masses of material ejected from the star B. initially expand at thousands of km/s C. are important for mixing material into the interstellar medium D. All of these choices are correct.
Referring to how many kilograms of ice can a 3-ton refrigeration unit produce in a 24-hour period? The heat of fusion of water is 330 kJ/kg.
GIVEN - A three-ton refrigeration unit - Heat of fusion of ice is 330 kJ/kg FIND (a) Kilograms of ice produced by the unit per 24 hour period (b) The refrigeration unit capacity is the net value, i.e., it includes heat losses ASSUMPTIONS (a) Water is cooled to just above the freezing point before entering the unit
If the current in an inductor is doubled, by what factor is the stored energy multiplied?
1.4 2.2 3.1 4.1/2 5.1/4