If a substance can be separated by physical means and it is not the same through, what is it?

A) element

B) compound

C) homogeneous solution

D) heterogeneous solution

Spidermans nemesis electro delivers 4kj of electrical energy in half a second how much power does it draw from the mains?

What are the fixed energies of electrons called

A piece of driftwood moves up and down as water waves pass beneath it. However, it does not move toward the shore with the waves.

Which best describes what happens to sunlight after passing through the keyhole of a door

2) The distance between the sun and the earth is about 1.5 x 10 to the power of 11m. Express this distance with an si prefix and in kilometers.

Light travels at 150000000km from the sun to earth in 8 minutes. What speed is this in Km/s

Electricity problem (coulomb's law)

An observer (O) spots a plane (P) taking off from a local airport and flying at a 29° angle horizontal to her line of sight and located directly above a tower (T). The observer also notices a bird (B) circling directly above her.

In order for convection to occur, you must have

Explain Newton's First Law for the following. If you walk across the room holding a ball, when should you drop it to ensure that it lands on a target? Before, after or when you are directly on the target?