How do stars radius compare with their mass

How did the theory of plate tectonics come to be a theory?

What are the main causes of the convention currents in the asthenosphere? A. Weight and Pressure B. Temperature and pressure C. Density and temperature I think its C

In the chapter on "Assembling the Rooms" in The Place of Houses the houses of Andrea Palladio are discussed in terms of the way their rooms are arranged. (The Villa Rotunda which we discussed in an earlier lecture fits their descripLon perfectly.

If it takes you 30 seconds to move a chair 20 meters across the floor, using a force of 5 Newton's, how much power did you put out? A. 3000 joules per second B. 3.33 joules per second C. 120 joules per second D. 52 joules per second

A swimmer heading directly across a river 200 m wide reaches the opposite bank in 6 min 40 s, during which time she is swept downstream 480 m. (a) how fast can she swim in still water?

If you combine 430.0 ml of water at 25.00 °c and 140.0 ml of water at 95.00 °c, what is the final temperature of the mixture? use 1.00 g/ml as the density of water. s

While working out, a man performed 200 j of work in 3 seconds. What was his power?

A funnel-shaped low pressure closure

A rubber rod can be charged negatively when it is rubbed with wool. predict what happens when you rub a copper rod with wool

A copper rod is 0.450 m long. Heat is added to the rod until it expands by 0.00130 m. How much did the temperature change? (Unit=C)