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

moc20160707T184111

V1:T1
1) A circlular capactitor of radius 4.4 m has a gap of 18 mm, and a charge of 36 &mu;C.  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
1) A circlular capactitor of radius 3.7 m has a gap of 10 mm, and a charge of 12 &mu;C.  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
1) A circlular capactitor of radius 3.6 m has a gap of 8 mm, and a charge of 53 &mu;C.  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
1) A circlular capactitor of radius 3.4 m has a gap of 15 mm, and a charge of 63 &mu;C.  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

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

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 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
1) 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=&mu;0H, where B is magnetic field. A current of 44A passes along the z-axis. Use symmetry to find the integral, $$\int \vec H\cdot\vec{d\ell}$$, from  ( -&infin; ,5) to (+ &infin; ,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=&mu;0H, where B is magnetic field. A current of 77A passes along the z-axis. Use symmetry to find the integral, $$\int \vec H\cdot\vec{d\ell}$$, 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
1) 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=&mu;0H, where B is magnetic field. A current of 76A passes along the z-axis. Use symmetry to find the integral, $$\int \vec H\cdot\vec{d\ell}$$, from  ( -&infin; ,5.8) to (+ &infin; ,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=&mu;0H, where B is magnetic field. A current of 88A passes along the z-axis. Use symmetry to find the integral, $$\int \vec H\cdot\vec{d\ell}$$, 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
1) 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=&mu;0H, where B is magnetic field. A current of 94A passes along the z-axis. Use symmetry to find the integral, $$\int \vec H\cdot\vec{d\ell}$$, from  ( -&infin; ,9.4) to (+ &infin; ,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=&mu;0H, where B is magnetic field. A current of 40A passes along the z-axis. Use symmetry to find the integral, $$\int \vec H\cdot\vec{d\ell}$$, 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
1) 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=&mu;0H, where B is magnetic field. A current of 74A passes along the z-axis. Use symmetry to find the integral, $$\int \vec H\cdot\vec{d\ell}$$, from  ( -&infin; ,9) to (+ &infin; ,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=&mu;0H, where B is magnetic field. A current of 94A passes along the z-axis. Use symmetry to find the integral, $$\int \vec H\cdot\vec{d\ell}$$, 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