In the graph why is the velocity positive at time 0.0 s?

About how fast is the speed of sound in air

What is the relationship between P - and S-waves?

Which is an example of simile? The skater was a swan on a frozen lake. An alarm clock screamed until I awoke. Raindrops whispered against the windows. Her dress was as light as a paper snowflake.

The dots on the map represent deep, underground hydrothermal resources in the United States. Why do more hydrothermal resources exist in the western regions of the United States?

Tom says that insulation keeps out the cold. Explain why this statement is incorrect. What should Tom have said?

A stone is thrown vertically upward with an initial speed of 19.3 m/s. Neglect air resistance. The speed of the stone when it is 5.81 m higher is:

A violently rotating column of air is formed around a region of extremely low air pressure above land. Which of these weather conditions is most likely to follow? blizzard cyclone tornado hurricane

How to indicate kinetic energy

During induction, a positively charged rod is brought near to but not touching the electroscope. The presence of the charged object above the plate of the electroscope induces charges to move down into the gold leaves, giving the electroscope an

You are operating a boat with a power ventilation system. you have just fueled this boat. how long should you let the ventilation system run before starting the engine?