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| Started by | Sergio <invalid@invalid.com> |
|---|---|
| First post | 2016-07-13 13:34 -0500 |
| Last post | 2016-07-14 14:05 -0500 |
| Articles | 3 — 2 participants |
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Physics Questions set 3 Sergio <invalid@invalid.com> - 2016-07-13 13:34 -0500
Re: Physics Questions set 3 Sergio <invalid@invalid.com> - 2016-07-13 15:42 -0500
Re: Physics Questions set 3 gia meeks <invalid@invalid.com> - 2016-07-14 14:05 -0500
| From | Sergio <invalid@invalid.com> |
|---|---|
| Date | 2016-07-13 13:34 -0500 |
| Subject | Physics Questions set 3 |
| Message-ID | <nm61kp$hjl$3@gioia.aioe.org> |
In a given process, 12 joules of heat is added to an ideal gas and the
gas does 8 joules of work. Which of the following is true about the
internal energy of the gas during this process?
(A) It has increased by 20 joules.
(B) It has increased by 4 joules.
(C) It has not changed.
(D) It has decreased by 4 joules.
(E) It has decreased by 20 joules.
Which of the following is true of the magnetic field produced by a
current in a long, straight wire?
(A) The field is uniform.
(B) The field increases in strength as the distance from the wire
increases.
(C) The field lines are directed parallel to the wire, but opposite
to the direction of the current.
(D) The field lines are directed radially outward from the wire.
(E) The field lines form circles about the wire.
A ball, initially at rest at t = 0 seconds, rolls with constant
acceleration down an inclined plane 10 meters long. If the ball rolls 1
meter in the first 2 seconds, how far will it have rolled at t = 4 seconds?
(A) 2 m
(B) 3 m
(C) 4 m
(D) 5 m
(E) 8 m
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| From | Sergio <invalid@invalid.com> |
|---|---|
| Date | 2016-07-13 15:42 -0500 |
| Message-ID | <nm6941$t9l$1@gioia.aioe.org> |
| In reply to | #589087 |
On 7/13/2016 1:34 PM, Sergio wrote: > > > In a given process, 12 joules of heat is added to an ideal gas and the > gas does 8 joules of work. Which of the following is true about the > internal energy of the gas during this process? > > (A) It has increased by 20 joules. > (B) It has increased by 4 joules. > (C) It has not changed. > (D) It has decreased by 4 joules. > (E) It has decreased by 20 joules. > > > Which of the following is true of the magnetic field produced by a > current in a long, straight wire? > > (A) The field is uniform. > (B) The field increases in strength as the distance from the wire > increases. > (C) The field lines are directed parallel to the wire, but opposite > to the direction of the current. > (D) The field lines are directed radially outward from the wire. > (E) The field lines form circles about the wire. > > > A ball, initially at rest at t = 0 seconds, rolls with constant > acceleration down an inclined plane 10 meters long. If the ball rolls 1 > meter in the first 2 seconds, how far will it have rolled at t = 4 seconds? > > (A) 2 m > (B) 3 m > (C) 4 m > (D) 5 m > (E) 8 m > > these from SAT, seem too easy,
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| From | gia meeks <invalid@invalid.com> |
|---|---|
| Date | 2016-07-14 14:05 -0500 |
| Message-ID | <nm8npd$baj$1@gioia.aioe.org> |
| In reply to | #589087 |
On 7/13/2016 1:34 PM, Sergio wrote: > > > In a given process, 12 joules of heat is added to an ideal gas and the > gas does 8 joules of work. Which of the following is true about the > internal energy of the gas during this process? > > (A) It has increased by 20 joules. > (B) It has increased by 4 joules. > (C) It has not changed. > (D) It has decreased by 4 joules. > (E) It has decreased by 20 joules. > > B 12 - 8 > > Which of the following is true of the magnetic field produced by a > current in a long, straight wire? > > (A) The field is uniform. > (B) The field increases in strength as the distance from the wire > increases. > (C) The field lines are directed parallel to the wire, but opposite > to the direction of the current. > (D) The field lines are directed radially outward from the wire. > (E) The field lines form circles about the wire. A wrong 1/r decline B wrong C wrong D Wrong E correct poorly worded stuff > > > > A ball, initially at rest at t = 0 seconds, rolls with constant > acceleration down an inclined plane 10 meters long. If the ball rolls 1 > meter in the first 2 seconds, how far will it have rolled at t = 4 seconds? > > (A) 2 m > (B) 3 m > (C) 4 m > (D) 5 m > (E) 8 m > A wrong B and D wrong cause they are odd E too far C must be it (no math needed)
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