Mars' mass is only a tenth of the Earth's, and its density is also less than the Earth's
Indicate whether the statement is true or false
TRUE
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A long string is pulled so that the tension in it increases by a factor of four. If the change in length is negligible, by what factor does the wave speed change?
a. 0.25 c. 2.0 b. 0.50 d. 4.0
A vertical pipe, closed at the bottom end, is filled to a depth of 1.00 m with water and then an amount of oil of density 
is added to make the total depth 2.00 m. The oil and water don't mix with the oil floating on top of the water. What is the increase in pressure at the bottom end of the pipe as a result of adding the fluids?
What will be an ideal response?
For a Trombé wall fitted to a twenty story building, the Grashof number is for air flowing through the wall was found to be 25 x 10^12. What is the equivalent Reynolds number for the flow?
What will be an ideal response?
The thermal motions of the atoms in a gas cloud can make it collapse to form a protostar
Indicate whether the statement is true or false