What 2 factors would contribute to a larger amount of static friction between 2 surfaces?
Rougher surfaces pressed harder together
Smoother surfaces pressed lightly together
Smoother surfaces pressed harder together
Rougher surfaces pressed lightly together

At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?

Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2