Sensitization is a result of direct contact with the abrasive material, localized, and related to the concentration of the substance applied.

(A) True

(B) False

An element with only neutrons?

Crew members attempt to escape from a damaged submarine 141 m below the surface. What force must be applied to a pop-out hatch, which is 1.72 m by 0.

1. Current is usually the flow of

An ice cube melts into liquid water. Then, the liquid water evaporates into water vapor. The ice cube melting is an example of a and the water evaporating is an example of a

Which of the following gases is the heaviest? H2S, NH3, CO, SO2

How do you reduce friction

3. A 16 kg barrel is lifted up by a rope. The barrel accelerates at 1.4 m/s2. Find the force exerted by the rope. Show all your work. Answer:

I don't have it anymore since no one cared to answer

When a substance changes from one phase to another, which of the following events occurs?

Which of the following contains both protons and neutrons? a. outer shell b. nucleus c. covalent bond d. ionic bond