From the fact that virtually every galaxy is moving away from us and more distant galaxies are moving away from us at a faster rate than closer ones, we conclude that

Penny puts Fluffy in one wagon and pushes the wagon, once, as hard as she can. Penny puts Butch in the other wagon and pushes it once, also as hard as she can. Both of the wagons travel across a level surface.

What is the medium of earthquake waves

You observe a distant galaxy. You find that a spectral line of hydrogen that is shifted from its normal location in the visible part of the spectrum into the infrared part of the spectrum. What can you conclude?

What do I need to think in my mind when I hear about electric lines of forces?

How does sandpaper increase friction

Which factor listed below most likely results in the loss of genetic variation from small populations? Question 2 options: mutation migration genetic recombination genetic drift

How could you demonstrate that visible white light is composed of many different colours?

Tas watches as his uncle changes a flat tire on a car. His uncle raises the car using a machine called a jack. Each time his uncle pushes down on the jack handle, the car rises up.

Prisms separate light, such as that from the Sun, by wavelength

Which of the following condition would decrease the ability of a person to hear a sound?