Which event is an example of melting? A. Fog forms in a valley.
B. Water drips from an icicle on the edge of a roof.
C. The outside of a glass of ice water becomes moist.
D. Wet clothes are drying on a clothesline.

Which of these questions might a character ask if the conflict is man versus self? a. which path should i take to better myself? b. which boulder will be too heavy for me to carry? c. which friend is going to ditch me today? d. all of the above

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

Could we see a galaxy that is 20 billion light-years away?