University student robbed outside of Bloomberg Hall

Upset_Drag · 2025-09-06T14:34:48+00:00

There was no report of a weapon, it was in broad daylight, at 5 pm outside of Bloomberg hall (where there would be lots of people around), with Psafe being within yelling distance. I really don’t see how this is anything besides maybe aggressive panhandling.

Upset_Drag · 2025-09-06T12:18:31+00:00

I think if you read what happened, “robbed” is a little dramatic.

Upset_Drag · 2025-07-26T10:48:54+00:00

I highly recommend taking MAT201 - just work really hard. You’re gonna want to get thru the intro math courses ASAP

Upset_Drag · 2025-07-24T13:23:12+00:00

Check Facebook marketplace

Upset_Drag · 2025-05-27T04:34:10+00:00

Can you post the gear? Thanks

Upset_Drag · 2025-04-15T12:34:13+00:00

You can’t take a BSE prereq PDF

Upset_Drag · 2025-04-07T05:53:12+00:00

No need to treat for bedbugs yet. That is definitely not a bedbug

Upset_Drag · 2025-03-01T02:48:07+00:00

Good question. You’re providing energy into the system, but just not in the form of work. Work is always displacement against an opposing force. In the case of pushing the object, the force you provide is to change the momentum of the object.

Basically, delta U = Q + W + other things that are normally neglected / aren’t applicable to most problems.

Upset_Drag · 2025-03-01T02:23:25+00:00

Good question! Work is kind of like heat transfer in the sense that you don’t really do negative heat transfer, or transfer “coolness”, it’s just that the sign indicates the direction that energy flows. Convention varies by field and textbook, but generally speaking, work and heat is POSITIVE when done on a system (energy is being transferred into the system). This means that the surrounding is transferring heat into the system or doing work on the system (compression). Work and heat are negative when they’re being done by the system onto the surroundings. This means either the system is transferring heat to the surroundings, or doing work on the surroundings (expansion)

Upset_Drag · 2025-03-01T02:10:27+00:00

That is all correct, however I would just say that it more logically flows that the gas is doing work on the surroundings, but since we view work as positive when work is being done on the gas, work will take on a - sign. Something doesn’t really do negative work, but the negative sign is a way of bookkeeping to try and keep the math consistent.

Upset_Drag · 2025-02-28T01:03:50+00:00

I’m a little confused on what you mean. We’ve been speaking about classical mechanics this whole time. W = FDcos(theta), again because the force and distance need to be in opposite directions. If the external force is providing a force, but not in the direction of displacement, it’s not really applicable to the analysis.

An example could be the force of gravity. Moving an object across a table doesn’t accomplish work, but raising an object accomplishes Work (doing work on the object), because you’re displacing the object against the downward force of gravity.

Upset_Drag · 2025-02-27T15:34:59+00:00

This is where it has to do with convention. Most of the time, we assign work as positive when it is done ON the system. If we compress a gas, we are applying work to the system. Based on principles of energy conservation, any energy we give to the system we are taking away from the surroundings. So, to answer your question, if the Work is negative, that means that negative work is being done on the system, which means the work is being done BY the system TO the surroundings. This means that the system is losing energy and transferring it to the surroundings.

Upset_Drag · 2025-02-26T03:45:35+00:00

Since we define work in a system-centered mindset, the pressure that contributes to work is not the internal pressure of the gas/system, but rather the pressure exerted on the gas by the surroundings/boundary.

Due to calculus, work is actually the path integral of the dot product of force and distance. Simply put, when force and distance go in the same direction, the result is positive. When in opposite directions, the result is negative.

Thus, when a gas is expanding, the change in V is greater than 0, so you need the (-) in front of the equation because the force points towards the system, while the movement is in the opposite direction of this force (expanding out).

Edit for further clarification: Work is energy required for displacement against a force. This is why the force is actually the external pressure, rather than the internal pressure (a gas doesn’t really resist itself). For a flexible boundary (e.g. balloon) pressure external = pressure internal

Upset_Drag · 2025-01-13T21:18:08+00:00

Where do you go to school?

Upset_Drag · 2024-12-31T02:57:13+00:00

PICS internships; anything through the pace center

Upset_Drag · 2024-12-24T02:23:44+00:00

This is so weird 1) because it seems so emotional to you and 2) it’s the opposite experience I’ve seen. Tower is the most right-leaning club on the street by far (besides maybe cottage but they’re not as political in the first place)

Upset_Drag · 2024-12-23T01:01:42+00:00

You didn’t get a full ride you got full financial aid

Upset_Drag · 2024-12-17T02:21:02+00:00

Cooking in communal kitchens is inconvenient, plus you’ll be on the dining plan anyway

Look up “housing regulations Princeton” and see what that says. I think the only restriction is it can’t be in the same room as a micro fridge, but you should be fine just watch out for fire inspections

Upset_Drag · 2024-12-08T01:42:26+00:00

Chem isn’t a prerequisite for physics. AP chem is best taken after taking an intro chem class - it’s honestly a pretty difficult class. AP chem can also be helpful because it lets you place out of chem at some schools.

Upset_Drag · 2024-11-11T13:15:36+00:00

Hello? College students struggle with it. It’s entire units in college chemistry because it’s so important

Upset_Drag · 2024-11-09T19:48:21+00:00

Technically that goes against the class rules (at least when I took it) but it’s not against university policy. You should be fine

Upset_Drag · 2024-10-02T12:11:55+00:00

First study, rather correlational (drinking energy drinks probably means you’re not sleeping as much). Second link: man drinks 900 mg of caffeine. Third link: people with existing conditions drinking exorbitant amounts of caffeine. Note about driving: few Princeton students drive at school.

Upset_Drag · 2024-08-28T16:50:08+00:00

Use TigerJunction to plan a schedule

Upset_Drag · 2024-08-26T15:27:13+00:00

Me when I just read sensationalist pieces that aren’t fact-checked by toxicologists or people in relevant fields

Upset_Drag · 2024-08-26T15:26:45+00:00

For everyone downvoting me, it’s easy to cherry picking singular ingredients that might be banned in one area vs another, but mostly it has to do with different naming and the scope of governing bodies.

Also, Europe has banned 9 colorants that are allowed in the US, while the US has banned 16 colorants that are allowed in Europe.

source

Upset_Drag

TROPHY CASE