An object has traveled 20 meters in 40 seconds what is its average speed

Think about all the different types of heat engines you might encounter in any given day. Think about how they operate and what their limitations might be. Assume that these heat engines operate at the Carnot efficiency.

Every winter i fly home to Michigan. It takes 5 hrs. What is my average speed?

How many protons are in an element with an atomic number of 8 and a mass number of 18?

Lightning strikes in the distance and six seconds later Thunder is heard how far away was the lightning strike

Which is true of pluto? a. pluto revolves around the sun but does not rotate. b. pluto does not revolve around the sun. c. pluto is not always the planet farthest from the sun. d. pluto's orbit is almost perfectly round.

A person of 83 kg is in an elevator. If the elevator is moving at a speed of 5 m/s, what's the person's kinetic energy? Keep 4 significant figures a 1,004 J b 1,038 c 1,280 J d 980 J e 1,435 J

What two equations can be used to determine the speed of a wave

Which force has an infinite range and is always attractive?

A ramp with a mechanical advantage of 8 lifts objects to a height of 1.5 meters how long is the ramp

Sodium, atomic number 11, forms an ionic bond with an atom of an unknown element. What is one possible choice for the ther element in the compound?