A biker starts a trip and rides at a constant velocity of 12 km/h for 0. 20 h. For the next 0. 10 h he bikes at an increased constant velocity and finds that he is at a rest stop 4. 8 km from his starting point. In the next 0. 20 h, half of which he rests, his average velocity is 9. 0 km/h. A. Construct a d-t graph for the trip. B. What is his average velocity for the trip?.

Hydrogen and helium are both members of?

Atelevision set that has been running for a while heats up even the air around it. which two laws of thermodynamics could be used to analyze this scenario

Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.