SAT 2 Physics Full-length Practice Test 6: Part B

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Question 15 questions

Time 12 minutes

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1. The processes of constructive interference and destructive interference occur in

A. cosmic rays.
B. light rays.
C. sound waves.
D. water waves.
E. all of these.

2. A positively charged rod is brought near an uncharged pith ball that is being touched by a copper wire. Both the rod and the copper wire are simultaneously removed, and the pith ball is tested to find if any electrostatic charge is present. What is the result?

A. The pith ball has been positively charged by conduction.
B. The pith ball has been positively charged by induction.
C. The pith ball has been negatively charged by conduction.
D. The pith ball has been negatively charged by induction.
E. The pith ball has not been charged in any way.

3. Two point charges are separated by a small distance. When the distance between the two particles is halved, which of the following descriptions is true?

A. The particles attract one another.
B. The particles repel one another.
C. The particles exert the same force on one another.
D. The particles exert twice as much force on one another.
E. The particles exert four times as much force on one another.

4. A photon of light from which of the following electromagnetic radiations carries the greater amount of energy?

A. Blue
B. Green
C. Orange
D. Red
E. Yellow

5. A person standing in an elevator watches a spider hanging from a thread attached to the ceiling. Suddenly the elevator accelerates downward. The person watching the spider on the thread will see

A. the spider thread snap and the spider slowly fall.
B. the spider thread and spider float upward.
C. the spider thread snap and the spider slowly float upward.
D. the spider thread and the spider remain as they were before the acceleration began.
E. the spider thread begin to swing back and forth like a pendulum.

6. Three ice cubes are placed into three equal beakers filled with water. One ice cube has a mass of 50 g, the second ice cube has a mass of 75 g, and the third ice cube has a mass of 100 g. After the ice cubes are added, each beaker is filled to the brim with water at a temperature of 1°C. After a period of time passes and all three ice cubes melt, which of the following situations is most likely?

A. All three beakers have overflowed.
B. None of the beakers have overflowed.
C. The beaker with the 100 g ice cube has overflowed.
D. The beakers with the 100 g and the 75 g ice cube in them have overflowed.
E. The beaker with the 50 g ice cube has overflowed.

7. One mole of helium gas and one mole of neon gas are both at STP. Which of the following statements about the gases is correct?

A. Their pressure is the same.
B. Their temperature is the same.
C. Their volume is the same.
D. Their number of particles is the same.
E. The pressure, temperature, volume, and number of particles is the same.

8. A step down transformer changes the high input voltage used in our houses (120V) into the low voltage used to charge an electric razor (24V). What must be the ratio of the turns of wire from the primary side of the transformer to the secondary side?

A. 1:5
B. 2:7
C. 1:8
D. 2:9
E. 1:10

9.

The equilibrant vector of a resultant vector is shown above. Which of the choices below represents the y component of the equilibrant vector?

A. Line A
B. Line B
C. Line C
D. Line D
E. Line E

10. Object A (which is cold) is placed on top of object B (which is hot) in a closed system. Which of the following is the best description of what occurs in the system?

I. Both A and B eventually reach the same temperature.

II. Gravity stops heat from moving up into A.

III. Heat flows from A to B.

A. I only
B. II only
C. I and III only
D. II and III only
E. I, II, and III

11.

Look at the image above produced by the convex mirror shown and choose the correct description of the image.

A. Erect and real
B. Real and enlarged
C. Enlarged and virtual
D. Virtual and reduced
E. Reduced and real

12. An object is moving in a circular path with a constant velocity (v). If the radius of the circle in which the object is moving is decreased by one half and the velocity remains the same, what will happen to the centripetal force?

A. It will be 4F.
B. It will be 2F.
C. It will be F.
D. It will be F/2.
E. It will be F/4.

13.

For the gas shown below, 70 Joules of energy is added between AB. The gas does 35 Joules of work. How much heat is exhausted between CD?

A. .5J
B. 2J
C. 35J
D. 105J
E. 2,450J

14. Which wave characteristic describes the number of wave crests passing a given point per unit time?

A. Frequency
B. Amplitude
C. Wavelength
D. Velocity
E. Period

15. What is the centripetal acceleration on the rim of a wagon wheel of 44 cm diameter if the wagon is being pulled at a constant 2.5 m/s?

A. 10.8 m/s
B. 18.6 m/s
C. 28.4 m/s
D. 32.7 m/s
E. 36.3 m/s