When heating a liquid in a test tube, which of the following safety precautions should you take? . 1.wear latex gloves.. 2. heat the test tube on an open flame if possible.. 3. put a tight lid on the test tube.. 4. angle the test tube away from yourself and others..

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9