7. For Figure 10-1A, the portion of the graph during which the substance is all solid is represented by interval: a. A-B
b. D-E
C-D
d. E-F

8. The minimum time required for the substance in Figure 10-1A to change from all gas to all liquid is:
a.30 minutes.
b. 12 minutes.
c. 8 minutes.
d. 7 minutes.

9. The boiling point of the substance Figure 10-1A is:
a. 40°C
b. 130°C
c. 230°C
d. 300°C

10. The melting point of the substance in Figure 10-1A is:
a. 40°C
b. 130°C
c. 230°C
d. 300°C

Derive the formula 2as=v² -u² where the formula have have usual meanings

Aipal measures a circuit at 1.2 a and 24 . using ohm’s law, what can he calculate for the circuit?

Aspring has a relaxed length of 33 cm (0.33 m) and its spring stiffness is 6 n/m. you glue a 76 gram block (0.076 kg) to the top of the spring, and push the block down, compressing the spring so its total length is 15 cm. you make sure the block is at rest, then at time t=0 you quickly move your hand away. the block begins to move upward, because the upward force on the block by the spring is greater than the downward force on the block by the earth. calculate y vs. time for the block during a 0.09-second interval after you release the block, by applying the momentum principle in three steps each of 0.03-second duration.