A 9 kg stone drops from a height of 20 meters. What is its velocity when it hits the ground? A.) 17.2 m/s

B.) 21.2 m/s

C.) 19.8 m/s

D.) 16.1 m/s

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.

Compare the patterns of the two waves shown in the image. which statement is true about these waves?