Author Question: A cup of water is filled to the brim when an ice cube is placed in it. The tip of the ice cube ... (Read 157 times)

maychende · **on:** Jul 29, 2018

A cup of water is filled to the brim when an ice cube is placed in it. The tip of the ice cube sticks out of the surface. As the ice melts, you observe that

A)

the cup overflows.
B)

the cup might overflow but it depends on the actual mass of the ice cube.
C)

the water level remains the same.
D)

the water level actually goes down.
E)

There is not enough information to answer this question.

Question 2

If the voltage gain for a transistor amplifier is 60 in a circuit with an output resistance of 10,000 ohms, what is the peak output current if the peak input voltage is 0.05 V?

A)

3 x 10-4 A
B)

4 x 10-4 A
C)

5 x 10-4 A
D)

6 x 10-4 A
E)

60 A