The students stopped chatting during the lesson when they saw the teacher's ______ stare.

N V ADJ

When the captain saw the baleful storm clouds over the horizon, he ordered...

In Exercise we saw earlier, what is the speed of the electron as it emerges from the field?

Use your Physics to explain the following:

a) Walking on wet ice is difficult.

b) It is difficult to strike a match on a smooth surface.

c) It is more difficult to pull a boat on the beach than in the sea.

d) Wet floors and wet roads are dangerous.

e) Cars are likely to skid on loose gravel.

f) Aborigines light fires by rubbing pieces of wood together.

g) Spaceships get hot when they return to Earth.

h) Sliding down a rope can burn you.

i) Speedboats have sharper bows than barges.

j) Racing cyclists wear smooth tight clothes.

Categorize the following objects as conductors or insulators: a. copper wire b. your body when your skin is wet c. a plastic comb

The child cried when he saw the _______ of his favorite toy in the driveway. (fragmentary)

If you saw a worm, how would you identify its phylum?

At a picnic, why would wrapping a bottle in a wet cloth be a better method of cooling than placing the bottle in a bucket of cold water?

What experimental evidence rejects the explanation that wet clothes become dry because the air absorbs the water? (a) The clothes dry faster if you blow air across them. (b) They do not dry if you put the wet clothes in a plastic bag. (c) The clothes dry faster under a vacuum jar with the air pumped out.

When the officials saw the _______ , unsanitary condition of the apartment, they took custody of the children.

On a see-saw, three Americans weighing a total of 450 lb are sitting on one side. Two Europeans weighing a total of 137 kg sit on the other side. What would a person have to weigh in kilograms to balance out the see-saw?

What other senses, besides sight, can you engage to re-create the images of "Petals on a wet, black bough"? Explain.

What is the product of the uncernainties determined in Exercises we saw earlier? Discuss the result.

Wet atmospheric air at 100 percent relative humidity contains saturated water vapor and, by Dalton’s law of partial pressures,

$$P_{atm} = P_{dry air} + P_{water vapor}$$

Suppose this wet atmosphere is at 40°C and 1 atm. Calculate the density of this 100 percent humid air, and compare it with the density of dry air at the same conditions.