Question 1
- Estimate the average power output of the Sun, given that about 1350 W/m2 reaches the upper atmosphere of the Earth. The distance from the Sun to the Earth is 1.5 × 1011 m.
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A. |
1 × 1026 W |
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B. |
4 × 1026 W |
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C. |
3 × 1026 W |
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D. |
2 × 1026 W |
Question 2
- A flux of 4.0 × 10-5 Wb is maintained through a coil for 0.50 s. What emf is induced in this coil by this flux?
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A. |
4.0 x 10-5 V |
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B. |
No emf is induced in this coil. |
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C. |
2.0 x 10-5 V |
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D. |
8.0 x 10-5 V |
Question 3
- A beam of light traveling in air is incident on a transparent plastic at an angle of incidence of 50o. The angle of refraction is 35o. What is the index of refraction of the plastic?
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A. |
1.56 |
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B. |
1.43 |
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C. |
1.34 |
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D. |
1.67 |
Question 4
- A concave mirror with a radius of 30 cm creates a real image 40 cm from the mirror. What is the object distance?
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A. |
70 cm |
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B. |
10 cm |
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C. |
5.0 cm |
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D. |
24 cm |
Question 5
- A long, straight wire carries a current of 2.5 A. Find the magnitude of the magnetic field 25 cm from the wire.
Question 6
- If the force between two charges increases by a factor of 16 because the charges are moved closer together, how much closer are they moved?
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A. |
8 |
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B. |
4 |
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C. |
2 |
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D. |
16 |
Question 7
- See the figure. The net force on the 1 nC charge is zero. What is q?
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A. |
8.0 nC |
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B. |
zero |
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C. |
0.68 nC |
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D. |
16 nC |
Question 8
- If a current is flowing with a value of 5.9 A, how much electron charge passes any single point in 25 seconds?
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A. |
2.3 x 1020 e |
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B. |
9.2 x 1020 e |
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C. |
1.5 x 1020 e |
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D. |
1.9 x 1020 e |
Question 9
- Starting from rest, a proton falls through a potential difference of 2700 V. What speed does it acquire?
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A. |
7.2 × 105 m/s |
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B. |
2.4 × 105 m/s |
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C. |
3.6 × 105 m/s |
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D. |
4.8 × 105 m/s |
Question 10
- Which of the equations here is valid for the circuit shown?
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A. |
2 – 2I1 – 2I2 – 4I3 = 0 |
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B. |
4 – I1 + 4I3 = 0 |
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C. |
6 – I1 – 2I2 = 0 |
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D. |
-2 – I1 + 4 – 2I2 = 0 |
**PLEASE SEE ATTACHMENT**
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