When the air density is 0 kg/m°(vacuum), how long will it take an object to reach terminal velocity?
a. it reaches terminal velocity immediately.
b. 2 seconds
5 seconds
d. the object never reaches terminal velocity.

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?

What is a possible explanation for a set of facts that can be tested by further investigations called