The power supplied to a light bulb is. 100 W. How much electrical energy is used by this light bulb in 20 s A. 5 J

B. 100 J

C. 500 J

D. 2000 J

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

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

Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly