# Wright State University Lake Campus/2016-6/moc/Sample exams

moc20160707T184111

### V1:T1

edit1) A circlular capactitor of radius 4.4 m has a gap of 18 mm, and a charge of 36 μC. What is the electric field between the plates?

- a) 4.55E+04 N/C (or V/m)
- b) 5.52E+04 N/C (or V/m)
- c) 6.68E+04 N/C (or V/m)
- d) 8.10E+04 N/C (or V/m)
- e) 9.81E+04 N/C (or V/m)

2) A planet that is very, very far from the Sun would be in retrograde for approximately ___ months.

- a) 24
- b) 12
- c) 3
- d) 6
- e) 1

3) If a planet that is very, very far from the Sun begins a retrograde, how many months must pass before it begins the next retrograde?

- a) 24
- b) 6
- c) 3
- d) 1
- e) 12

4) Immediately after publication of Newton's laws of physics (Principia), it was possible to "calculate" the mass of Jupiter. What important caveat applied to this calculation?

- a) The different moons yielded vastly different values for the mass of Jupiter.
- b) The different moons yielded slightly different values for the mass of Jupiter.
- c) Only the mass of Jupiter relative to that of the Sun could be determined.
- d) They needed to wait over a decade for Jupiter to make approximately one revolution around the Sun.
- e) tides from the other moons and Jupiter.

#### V1:T1 KEY

edit1) A circlular capactitor of radius 3.7 m has a gap of 10 mm, and a charge of 12 μC. What is the electric field between the plates?

- -a) 2.15E+04 N/C (or V/m)
- -b) 2.60E+04 N/C (or V/m)
- +c) 3.15E+04 N/C (or V/m)
- -d) 3.82E+04 N/C (or V/m)
- -e) 4.63E+04 N/C (or V/m)

2) A planet that is very, very far from the Sun would be in retrograde for approximately ___ months.

- -a) 1
- +b) 6
- -c) 24
- -d) 3
- -e) 12

3) If a planet that is very, very far from the Sun begins a retrograde, how many months must pass before it begins the next retrograde?

- -a) 1
- +b) 12
- -c) 6
- -d) 24
- -e) 3

4) Immediately after publication of Newton's laws of physics (Principia), it was possible to "calculate" the mass of Jupiter. What important caveat applied to this calculation?

- -a) tides from the other moons and Jupiter.
- -b) They needed to wait over a decade for Jupiter to make approximately one revolution around the Sun.
- +c) Only the mass of Jupiter relative to that of the Sun could be determined.
- -d) The different moons yielded slightly different values for the mass of Jupiter.
- -e) The different moons yielded vastly different values for the mass of Jupiter.

### V2:T1

edit1) A circlular capactitor of radius 3.6 m has a gap of 8 mm, and a charge of 53 μC. What is the electric field between the plates?

- a) 6.82E+04 N/C (or V/m)
- b) 8.27E+04 N/C (or V/m)
- c) 1.00E+05 N/C (or V/m)
- d) 1.21E+05 N/C (or V/m)
- e) 1.47E+05 N/C (or V/m)

2) A planet that is very, very far from the Sun would be in retrograde for approximately ___ months.

- a) 6
- b) 12
- c) 3
- d) 24
- e) 1

3) If a planet that is very, very far from the Sun begins a retrograde, how many months must pass before it begins the next retrograde?

- a) 6
- b) 24
- c) 12
- d) 1
- e) 3

4) Immediately after publication of Newton's laws of physics (Principia), it was possible to "calculate" the mass of Jupiter. What important caveat applied to this calculation?

- a) tides from the other moons and Jupiter.
- b) They needed to wait over a decade for Jupiter to make approximately one revolution around the Sun.
- c) Only the mass of Jupiter relative to that of the Sun could be determined.
- d) The different moons yielded vastly different values for the mass of Jupiter.
- e) The different moons yielded slightly different values for the mass of Jupiter.

#### V2:T1 KEY

edit1) A circlular capactitor of radius 3.4 m has a gap of 15 mm, and a charge of 63 μC. What is the electric field between the plates?

- -a) 1.62E+05 N/C (or V/m)
- +b) 1.96E+05 N/C (or V/m)
- -c) 2.37E+05 N/C (or V/m)
- -d) 2.88E+05 N/C (or V/m)
- -e) 3.48E+05 N/C (or V/m)

2) A planet that is very, very far from the Sun would be in retrograde for approximately ___ months.

- +a) 6
- -b) 24
- -c) 3
- -d) 1
- -e) 12

- +a) 12
- -b) 6
- -c) 24
- -d) 3
- -e) 1

- -a) The different moons yielded slightly different values for the mass of Jupiter.
- -b) The different moons yielded vastly different values for the mass of Jupiter.
- -c) They needed to wait over a decade for Jupiter to make approximately one revolution around the Sun.
- -d) tides from the other moons and Jupiter.
- +e) Only the mass of Jupiter relative to that of the Sun could be determined.

moc20160707T184111

### V1:T2

edit1) Under what conditions would a planet not seem to rise in the east and set in the west?

- a) if the observer is near the north or south poles
- b) if the observer is below the equator
- c) if the planet is in direct motion
- d) if the planet is in elliptical motion
- e) if the planet is in retrograde motion

2) At 3pm a waxing gibbous moon would be}

- a) below the western horizon
- b) high in eastern sky
- c) below the eastern horizon
- d) high in western sky
- e) eastern horizon

3) At 9pm a waxing crescent moon would be}

- a) overhead
- b) eastern horizon
- c) western horizon
- d) below the western horizon
- e) high in eastern sky

4) H is defined by, B=μ_{0}H, where B is magnetic field. A current of 44A passes along the z-axis. Use symmetry to find the integral, , from (-∞,5) to (+∞,5).

- a) 1.67E+01 amps
- b) 1.83E+01 amps
- c) 2.01E+01 amps
- d) 2.20E+01 amps
- e) 2.41E+01 amps

5) H is defined by, B=μ_{0}H, where B is magnetic field. A current of 77A passes along the z-axis. Use symmetry to find the integral, , from the point (-9.8, 9.8) to the point (9.8, 9.8).

- a) 1.60E+01 amps
- b) 1.76E+01 amps
- c) 1.93E+01 amps
- d) 2.11E+01 amps
- e) 2.31E+01 amps

#### V1:T2 KEY

edit1) Under what conditions would a planet not seem to rise in the east and set in the west?

- +a) if the observer is near the north or south poles
- -b) if the observer is below the equator
- -c) if the planet is in direct motion
- -d) if the planet is in retrograde motion
- -e) if the planet is in elliptical motion

2) At 3pm a waxing gibbous moon would be}

- +a) eastern horizon
- -b) high in eastern sky
- -c) below the eastern horizon
- -d) below the western horizon
- -e) high in western sky

3) At 9pm a waxing crescent moon would be}

- -a) overhead
- -b) eastern horizon
- -c) below the western horizon
- -d) high in eastern sky
- +e) western horizon

4) H is defined by, B=μ_{0}H, where B is magnetic field. A current of 76A passes along the z-axis. Use symmetry to find the integral, , from (-∞,5.8) to (+∞,5.8).

- -a) 3.16E+01 amps
- -b) 3.47E+01 amps
- +c) 3.80E+01 amps
- -d) 4.17E+01 amps
- -e) 4.57E+01 amps

5) H is defined by, B=μ_{0}H, where B is magnetic field. A current of 88A passes along the z-axis. Use symmetry to find the integral, , from the point (-8.1, 8.1) to the point (8.1, 8.1).

- -a) 2.01E+01 amps
- +b) 2.20E+01 amps
- -c) 2.41E+01 amps
- -d) 2.64E+01 amps
- -e) 2.90E+01 amps

### V2:T2

edit1) Under what conditions would a planet not seem to rise in the east and set in the west?

- a) if the observer is near the north or south poles
- b) if the planet is in direct motion
- c) if the planet is in retrograde motion
- d) if the observer is below the equator
- e) if the planet is in elliptical motion

2) At 3pm a waxing gibbous moon would be}

- a) below the eastern horizon
- b) high in eastern sky
- c) eastern horizon
- d) below the western horizon
- e) high in western sky

3) At 9pm a waxing crescent moon would be}

- a) eastern horizon
- b) high in eastern sky
- c) western horizon
- d) below the western horizon
- e) overhead

4) H is defined by, B=μ_{0}H, where B is magnetic field. A current of 94A passes along the z-axis. Use symmetry to find the integral, , from (-∞,9.4) to (+∞,9.4).

- a) 3.25E+01 amps
- b) 3.57E+01 amps
- c) 3.91E+01 amps
- d) 4.29E+01 amps
- e) 4.70E+01 amps

5) H is defined by, B=μ_{0}H, where B is magnetic field. A current of 40A passes along the z-axis. Use symmetry to find the integral, , from the point (-9.4, 9.4) to the point (9.4, 9.4).

- a) 7.59E+00 amps
- b) 8.32E+00 amps
- c) 9.12E+00 amps
- d) 1.00E+01 amps
- e) 1.10E+01 amps

#### V2:T2 KEY

edit1) Under what conditions would a planet not seem to rise in the east and set in the west?

- +a) if the observer is near the north or south poles
- -b) if the planet is in direct motion
- -c) if the observer is below the equator
- -d) if the planet is in retrograde motion
- -e) if the planet is in elliptical motion

2) At 3pm a waxing gibbous moon would be}

- -a) high in eastern sky
- -b) below the eastern horizon
- -c) high in western sky
- +d) eastern horizon
- -e) below the western horizon

3) At 9pm a waxing crescent moon would be}

- -a) high in eastern sky
- -b) below the western horizon
- +c) western horizon
- -d) eastern horizon
- -e) overhead

4) H is defined by, B=μ_{0}H, where B is magnetic field. A current of 74A passes along the z-axis. Use symmetry to find the integral, , from (-∞,9) to (+∞,9).

- -a) 3.08E+01 amps
- -b) 3.37E+01 amps
- +c) 3.70E+01 amps
- -d) 4.06E+01 amps
- -e) 4.45E+01 amps

5) H is defined by, B=μ_{0}H, where B is magnetic field. A current of 94A passes along the z-axis. Use symmetry to find the integral, , from the point (-5.8, 5.8) to the point (5.8, 5.8).

- -a) 1.78E+01 amps
- -b) 1.95E+01 amps
- -c) 2.14E+01 amps
- +d) 2.35E+01 amps
- -e) 2.58E+01 amps