The location in the Hertzsprung-Russell (H-R) diagram of giant stars fusing helium is referred to as the vertical branch
Indicate whether the statement is true or false
False
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10 joules of heat energy are transferred to a sample of ideal gas at constant volume. As a result, the internal energy of the gas
A. increases by 10 J B. increases by less than 10 J C. increases by more than 10 J D. remains unchanged.
A 2.00-m rod of negligible mass connects two very small objects at its ends. The mass of one object is 1.00 kg and the mass of the other is unknown. The center of mass of this system is on the rod a distance 1.60 m from the 1.00-kg mass object
What is the mass of the other object? A) 4.11 kg B) 3.22 kg C) 4.00 kg D) 0.250 kg E) 0.800 kg
The density of an object is defined as
A. the volume occupied by each unit of mass. B. the amount of mass for each unit of volume. C. the weight of each unit of volume. D. the amount of the substance that has unit volume and unit mass. E. the amount of the substance that contains as many particles as 12 grams of the carbon-12 isotope.
The activity of a radioactive source is often
measured in a unit called? a) the joule b) the u c) the microgram d) the cpm