What causes friction? A. Inertia
B. Tiny collisions, called microwelds, on surfaces, even those that
seem smooth
C. Action - Reaction
D. All surfaces are rough to the touch and therefore cause friction

Stion 13 of 20 : select the best answer for the question. 13. if a certain mass of mercury has a volume of 0.002 m3 at a temperature of 20°c, what will be the volume at 50°c? a. 0.002021624 m3 b. 0.004021624 m3 c. 0.000010812 m3 d. 0.002010812 m3

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

What is a possible result of higher air temperature caused by global warming