Which of the following would be best used as an electrical insulator?

A. copper

B. silver

C. salt water

D. wood

What is the expression of the chemical composition of a compound?

Which of these would have particles with the highest kinetic energy? Ice Water Water Vapor

When a boat moves through the water, the waves in front of the boat bunch up, while the waves behind the boat spread out. this is an example of?

True or false materials that are poor conductors are poor insulaters

Using the Bohr model, what is the ratio of the energy of the nth orbit of a triply ionized beryllium atom (Be3+, Z = 4) to the energy of the nth orbit of a hydrogen atom (H) ? Enth orbit, Be / Enth orbit, H

A carpenter is working on a house two blocks away. you notice a slight delay between seeing the carpenter's hammer hit the nail and hearing the blow. at what time does the event "hammer hits nail" occur?

There have been books written about how blood type affects personality or body shape. Knowing that blood type is determined by antigens on erythrocytes, are these claims scientifically valid? O True O False

A stone is dropped from a 80m bridge. How long does it take to fall?

How does an iron nail become a rusty nail

What is the velocity of a bullet train that moves 400 meters west over 3 minutes anad 20 seconds?