In winter why do water tanks start freezing from surface and not from bottom

How would the pressure and temperature at 100 m below sea level affect the speed of the air molecules in your lungs compared to their speed at sea level?

What does the chemical formula CaCl show about the compound it represents It is made up of one element. It is made up of two elements. It is made up of three elements. It is made up of four elements

Use conduction in a sentence

Which of these should you not do when merging onto a freeway? A. Select a gap large enough to fit your vehicle. B. Change lanes smoothly. C. Change two lanes at once and speed up. D. Adjust your speed to create a safe following interval.

A sports car can move 100.0 m in the first 4.5 s of constant acceleration. a. what is the car's acceleration?

What is the definition of air pressure

A cold glass of iced tea warms quickly on a hot day through the process of A. conversion. B. insulation. C. conduction. D. expansion.

As a woman walks, her entire weight is momentarily placed on one heel of her high-heeled shoes. Calculate the pressure exerted on the floor by the heel if it has an area of 1.83 cm2 and the woman's mass is 54 kg. Express the pressure in Pa.

What is a barred spiral?

an 875kg car speed from 22m/s to 44m/s while pushing another car. what work was in changing the car's speed?