How do scientists measure distance outside of the solar system

How many gallons are in a cubic gallon?

True or False? Current ethical standards for psychology experiments were established by Freud in the 1920s.

On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The free-fall acceleration on the moon is 1/6 of its value on earth.

Which type of cell contains a cell membrane? A. Both a plant cell and an animal cell have a cell membrane. B. Neither an animal cell nor a plant cell has a cell membrane. C. An animal cell has a cell membrane, but a plant cell does not. D.

If the acceleration is in the same direction as the velocity, what happenes to the speed of an object?

List the different types of electromagnetic readiation (waves) in order from shortest wavelength to longest wavelength

Which way does the Coriolis effect deflect objects in the Northern Hemisphere To the south To the right To the left To the north

Let T be a linear transformation from a vector space V with dimension 11 onto a vector space W with dimension 7. What is the dimension of the nullspace of T?

What is the fundamental unit for measuring mass in the metric system?

Why are some craters on the moon bigger than others