He is the chemical symbol for which element? Select one: a. hydrogen b. hassium c. helium d. hafnium

Susie is measuring the different parts of a transverse wave and recording notes in her journal. Which of the following will she be able to measure using the crest or trough of a single wave? A.

Ozone molecules protect earth from the harmful effects of the sun by

If an object is moving with constant velocity, what do you know about its acceleration?

A high speed train travels with an average speed of 227 km/hr. The train travels for 2hrs how far does the train travel

Limestone is an example of a chemical sedimentary rock. describe how limestone may form

In a class debate, a student argues that the big bang theory is "just a theory." What is most likely to be this student's understanding of scientific theories? A. Theories agree with observations of nature. B. Theories are just guesses. C.

Look at the advertisement. A poster that reads, "There's more to resistors than resistance. If you're really serious about cost, be serious about quality." with tools. Which persuasive media technique is used in this advertisement

If you were told an atom was an ion, you would know the atom must have a

When a potential difference of 13 V is placed across a resistor, the current in the resistor is 1.4 a. What is the resistance of the resistor?

Person with a mass of50 kg jumps up from the earth with an acceleration of 20 newtons. what is his acceleration?