Longitudinal waves do not have

a. amplitude

b. frequency

c. wavelength

d. speed

e. nonsense, longitudinal waves have all of these properties

What is a free fall?

Researchers want to use edna to look for an invasive species in a waterway. which of these steps should they do first? a. precipitate dna in each sample. b. sort dna into bands on a gel. c. cut dna into small pieces. d. amplify the amount of dna.

How do the NGSS use Crosscutting Concepts in a new way?

If an object has low acceleration it isn't moving very fast true or false

The speed an object needs to move away from the gravitational pull of the earth is called

Two persons are applying forces on two opposite sides of a moving cart. The cart still moves with the same speed in the same direction. What do you infer about the magnitudes and direction of the forces applied?

SI unit of mass and gravity

What is the difference between porosity and permeability

In the diagram below, the planets' relative distances from the Sun are shown. The sizes of the planets are not drawn to scale.

Should athletes be benched if their grades are too low, or should they be allowed to play anyway?