Why do some elements have symbols that don't use letters in the element's name?

3. Which form of radiation is used to kill microorganisms? a. microwaves b. visible light c. infrared rays d. ultraviolet rays

W, the turntable stops rotating, and the ladybug and the gentleman bug move to opposite edges of the outer rim. the gentleman bug has not watched his weight and is much more massive. the turntable then begins rotating ever more rapidly.

The earth and the moon are attracted to each other by gravitational force. Does the earth attract the moon with a force that is greater or smaller or the same as the force with which the moon attracts the earth? Why?

What is the force acting on an object of mass 10 kg moving with a uinform velocity of 10 m/s? A) 100N B) 10N C) 0N D) 1N

Which of the following water waves has more energy? ripples in a pond tsunami waves breakers on an ocean beach waves created by a passing motor boat

You are drawing a branching diagram to show the relationship between Turtles frogs and alligators which two organisms does the diagram indicateas having the most recent common ancestor

Estimate the length of the neptunian year using the fact that the earth is 1.50Ã108km from the sun on average.

Identify one type of electromagnetic energy that has a shorter wave length than green light

Any object with mass exerts a force on any other object with mass. This force is called?

Is a light bulb considered construction