Why can protons not be rubbed off one material and transferred to the other?

The acceleration rate of a soccer ball rolling down a hill would be a. positive then negative. b. negative then positive. c. constant and negative. d. constant and positive

Sound travels slow in cold air. Why does the speed of sound depend on air temperature?

how long does it take a 750watt heater operating at full rating to rais the temperature of 1kg of water From 40°C to 70°C {S. H. C=4200j/kg/k and neglecte heat loss}

If the total dissipated power is to be reduced by 10%, how much should the voltage be reduced to maintain the same leakage current? note: power is defined as the product of voltage and current.

14. A 7 Kg box sits on an incline of 30°, what is the force down the incline?

You are riding a bicycle home from school. You average 5 meters per second and you are headed south. What motion can you determine from this data? OA Acceleration OB Distance OC Speed OD Velocity

Spiral galaxy rotation curves are generally fairly flat out to large distances. Suppose that spiral galaxies did not contain dark matter.

How are the functions of the cytoskeleton and the cell wall similar

1. How many electrons does the K level of an atom hold?

A puck traveling at 6 m/s in the + x direction hits a wall and bounces back. Right after the collision with the wall it is traveling in the - x direction at 6 m/s.