Which of the beams is due to alpha particles?

A) a
B) b
C) c
D) all of the above
E) none of the above


Answer: C

Physics & Space Science

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RC Circuits: A capacitor C is connected in series with a resistor R across a battery and an open switch. If a second capacitor of capacitance 2C is connected in series with the first one, the time constant of the new RC circuit will be

A. the same as before. B. larger than before. C. smaller than before. D. variable.

Physics & Space Science

The mutual attraction of gas molecules is an important aspect of:

A) Avogadro's Hypothesis B) Dalton's Law C) Graham's Law D) van der Waals Theory E) ideal gas law

Physics & Space Science

A positively charged particle is moving in the +y-direction when it enters a region with a uniform electric field pointing in the +x-direction. Which of the diagrams below shows its path while it is in the region where the electric field exists. The region with the field is the region between the plates bounding each figure. The field lines always point to the right. The x-direction is to the right; the y-direction is up.

A.


B.

C.

D.

E.

Physics & Space Science

You observe a rocket moving toward you. Compared to its length when it was at rest on the ground, you will measure its length to be:

1.shorter. 2.longer. 3.the same.

Physics & Space Science