What form of convection causes the offshore sea breeze in the evening?
A. natural convection of air falling over the cooling land
B. forced convection air or force convection of water
C. forced convection of water
D. natural convection of air rising over the warming land
A. natural convection of air falling over the cooling land
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When an ideal gas is expanded in volume at constant pressure, the average kinetic energy of the gas molecules
A) increases. B) decreases. C) does not change. D) may either increase or decrease, depending on whether or not the process is carried out adiabatically. E) may or may not change, but insufficient information is given to make such a determination.
A solid sphere is rolling without slipping along a horizontal surface with a speed of 4.50 m/s when it starts up a ramp that makes an angle of 25.0° with the horizontal
What is the speed of the sphere after it has rolled 3.00 m up the ramp? A) 4.01 m/s B) 8.02 m/s C) 1.91 m/s D) 2.16 m/s E) 1.58 m/s
When Eratosthenes was using the well at Syene and the obelisk at Alexandria to study the Earth, what statistic was he trying to calculate?
The hotter an object, the bluer it appears
a. True b. False Indicate whether the statement is true or false