A spherical snowball is melting in such a way that its diameter is decreasing at a rate of 0.3cm per minute. At what rate in cubic cm per minute is the volume of the snowball changing when the diameter is 9cm? Submit an exact answer in terms of π. Do not forget to include a negative sign if the volume is decreasing. Hint: The volume of a sphere of radius r is V=43πr3.

Is it possible to use the energy from two atoms colliding to create a clean burning lasting fuel source with a large amount of force? is it also possible to harness that energy from the two atoms colliding to create a clean energy source that will last for years from just two atoms colliding. is there a possibility to control and store that energy for years but slowly let the energy out enough to power cities cheaper and faster.

What causes the formation of ocean currents?

What are the similarities & differences between a thermistor and a light dependent resistor in physics?