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PHYSICS 1A · Dis 1A

Physics for Scientists and Engineers: Mechanics

Fall 2026Ni, L.5 units

Seats, time, final and grades

Seats

Waitlist, 0 of 2 places taken.

55 of 55 enrolled.

Its lecture reads closed (188 of 188 enrolled): you attend both, so this seat is not one you can take while that holds. There is no waitlist either, so the only way in is somebody dropping the lecture.

Meets

T 2:00pm-2:50pm

This discussion only. You also attend Lec 1.

Final

Tue 8 Dec, 11:30am to 2:30pm

One exam for the whole class, Los Angeles time.

Read 7 hours ago.

Grades

3.11
predicted, all instructors · 4,710 grades

4,710 letter grades, everyone who has taught PHYSICS 1A.

Read 26 minutes ago. This is a recent reading, not a live seat count.

dibs has seen this section open 20 times since 17 August. The last time was 12 September. 14 of those were readings where the capacity figure moved and the enrolled count did not, so dibs could not tell whether a seat existed and did not send an alert.

Join the waitlist on the registrar (opens in a new tab) Sign in to watch for an opening

Watching is the one thing here that needs an account, because an alert needs somewhere to go. Everything else on this page works signed out.

Put this class on a board

A board is one quarter you are drafting, so it needs an account to live in. Signing in brings you straight back to this page, with this class still in front of you.

Before you can enroll

Tell dibs what you have already taken and this line will say which of these you have. Your list.

The registrar says this two ways. Its requisites table calls the requisite above a warning, so enrollment is not blocked, and its course description for PHYSICS 1A calls the same requisite enforced. dibs follows the table and cannot tell you which one the department will act on. Read the registrar's own page.

Restrictions read 7 hours ago.

When it meets

Mon
Tue
Wed
Thu
Fri
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm

Meets: T 2:00pm-2:50pm

Lecture: TR 8:00am-9:50am

Physics and Astronomy Building 1434A

Grades

3.11
predicted, all instructors · 4,710 grades

Of the 13 people in the grade record for PHYSICS 1A, the 2 with the most grades: KAMAHA, ALVINE at 2.89 over 912 grades and VASSILIEV, VLADIMIR V at 3.26 over 881 grades.

A range
42%
P/NP
1%
D/F/W
5.4%

Full grade history for PHYSICS 1A

What students say

dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.

What the work looks like

  • 3 exams, said by 2 reviewers
  • 5 quizzes, said by 1 reviewer
  • Problem sets mentioned, no number given, said by 1 reviewer

Read from 534 reviews about 1 month ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.

Will it still be here

high risk chance of closing before your enrollment pass.

Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.

  • 15421F
  • 16122W
  • 17722S
  • 18522F
  • 15823W
  • 16923S
  • 18623F
  • 15424W
  • 13424S
  • 18524F
  • 15325W
  • 15425S
  • 18725F
Enrollment by term: 21F 154, 22W 161, 22S 177, 22F 185, 23W 158, 23S 169, 23F 186, 24W 154, 24S 134, 24F 185, 25W 153, 25S 154, 25F 187

Peak 187 · most recent 25F at 187

Seats over time

Filled by 13 over about 2 months

20 times reopened
55 of 55 · no seats left
17 Aug 16:559 Sep 06:531 Oct 20:52
dibs read 168 of the 540 hours its hourly record covers, 31%, and did not look in 372. dibs had no hourly record before 9 Sep, which is the other 545 of 1085 plotted.55 of 55 enrolled at the newest reading, 26 minutes ago, and no seats left. Seats from 17 Aug 16:55 to 1 Oct 20:52, 42 to 55. dibs read 168 of the 540 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 372 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 545 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

A dot is a reading where something moved: the seat count, the status, or the waitlist. Flat between dots joins recorded counts; changes between reads may be missed. The line starts when dibs first saw this section rather than reaching back before it existed. The last one is the last time dibs read this section, moved or not: 26 minutes ago.

Show the readings (62)
Recorded Enrolled Capacity Status Waitlist Hours read
1 Oct 20:52 55 55 waitlist 0 of 2 8 of 20
1 Oct 01:32 55 55 waitlist 0 of 2 2 of 4
30 Sep 22:02 55 55 closed 2 of 2 2 of 4
30 Sep 19:22 55 55 waitlist 0 of 2 9 of 30
29 Sep 14:22 55 55 closed 2 of 2 38 of 126
24 Sep 09:12 55 55 waitlist 1 of 2 3 of 8
24 Sep 02:02 55 55 closed 2 of 2 8 of 26
23 Sep 01:32 55 55 waitlist 0 of 2 40 of 124
17 Sep 22:52 55 55 closed 2 of 2 4 of 11
17 Sep 12:22 55 55 waitlist 0 of 2 34 of 108
13 Sep 01:42 55 55 closed - 2 of 3
12 Sep 23:12 54 55 open - 2 of 5
12 Sep 19:52 55 55 closed - 4 of 10
12 Sep 10:32 54 55 open - 3 of 8
12 Sep 03:37 55 55 closed - 2 of 4
12 Sep 00:12 51 55 open - 2 of 3
11 Sep 22:02 55 55 closed - 11 of 34
10 Sep 13:40 51 55 open - 5 of 13
10 Sep 01:40 51 52 open - 7 of 25, 8 no hourly record
9 Sep 01:40 49 52 open - no hourly record
9 Sep 00:40 49 49 closed - no hourly record
8 Sep 22:40 49 52 open - no hourly record
5 Sep 02:40 49 49 closed - no hourly record
3 Sep 23:40 46 49 open - no hourly record
3 Sep 21:40 46 46 closed - no hourly record
3 Sep 11:27 46 49 open - no hourly record
27 Aug 18:40 46 46 closed - no hourly record
26 Aug 01:40 45 46 open - no hourly record
26 Aug 00:40 45 48 open - no hourly record
25 Aug 23:40 45 46 open - no hourly record
25 Aug 22:40 45 48 open - no hourly record
25 Aug 21:55 45 46 open - no hourly record
25 Aug 20:55 45 48 open - no hourly record
25 Aug 19:55 45 46 open - no hourly record
25 Aug 17:55 45 48 open - no hourly record
25 Aug 16:55 45 46 open - no hourly record
24 Aug 19:55 45 48 open - no hourly record
24 Aug 17:55 45 45 closed - no hourly record
24 Aug 15:55 45 48 open - no hourly record
24 Aug 14:55 45 45 closed - no hourly record
24 Aug 13:55 45 48 open - no hourly record
24 Aug 11:55 45 45 closed - no hourly record
24 Aug 10:55 45 48 open - no hourly record
21 Aug 01:55 45 45 closed - no hourly record
20 Aug 23:55 42 45 open - no hourly record
20 Aug 21:55 45 45 closed - no hourly record
20 Aug 20:55 42 45 open - no hourly record
20 Aug 19:55 45 45 closed - no hourly record
20 Aug 18:55 42 45 open - no hourly record
20 Aug 17:55 45 45 closed - no hourly record
20 Aug 01:55 42 45 open - no hourly record
20 Aug 00:55 42 42 closed - no hourly record
19 Aug 21:55 42 45 open - no hourly record
19 Aug 19:55 42 42 closed - no hourly record
19 Aug 18:55 42 45 open - no hourly record
19 Aug 15:55 42 42 closed - no hourly record
19 Aug 14:55 42 45 open - no hourly record
19 Aug 13:55 42 42 closed - no hourly record
19 Aug 12:55 42 45 open - no hourly record
19 Aug 10:55 42 42 closed - no hourly record
19 Aug 09:55 42 45 open - no hourly record
17 Aug 16:55 42 42 closed - -
How readings and alerts work

A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.

Class chat

Nobody on dibs watches this class or has it on a plan yet. Nobody has posted yet.

Dis 1A shares one room with Lec 1 and every other discussion under it, because that is what a student means by "my class".

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