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Physics : Recent Questions and Answers (Page 683)

Find answers to your questions about Physics or help others by answering their Physics questions.

Understanding a rotational system with centripetal snap, angular jerk, and a third-dimensional tension vector

In a recent experiment in my physics class, we were given the task of finding the experimental rotational moment of inertia in a T-stand with two masses attached to the...

Asked on 01/03/2021 by Addison Crump

3 answer

Can we measure $Delta G$ when a reaction hasn't reach equilibrium?

Suppose we have the reaction $$mathrm{A + B leftrightharpoons C}$$The system starts with reactants (or products) and reaches equilibrium. Can we measure the change in Gibbs...

Asked on 01/03/2021 by Antonios Sarikas

2 answer

Approximating current in photoelectric effect

I am currently doing an experiment looking at the energy distribution of photoelectrons in the photoelectric effect. I have done some data collection for different wavelengths of light, and have...

Asked on 01/03/2021 by Tiaan Stals

1 answer

Parallax and redshift - has anyone used Gaia data to match objects with redshift data?

Given the recent Gaia parallax data out to large distances, has anyone used that data to match objects with observed redshift data? I have taken as much Gaia object data...

Asked on 01/03/2021 by mikel

0 answer

Charged black hole

It is known that Einstein's equations admit solutions for charged black holes. The Reissner–Nordström metric in case of a non-rotating charged black hole and for rotating charged black holes there...

Asked on 01/03/2021

1 answer

Why is the $y$-component of acceleration twice the $x$-component?

We were given this question. the answer said that when $m$ released, the $y$ component of acceleration of...

Asked on 01/03/2021 by user279163

2 answer

Friction forces when calculating the height of water waves when throwing a stone into the water

I recently watched people throwing stones into a lake and I was wondering about the profile of the waves. How does the height decline over time? I believe it's clear...

Asked on 01/03/2021

0 answer

Geostationary Satellite

I am unable to understand one particular thing about geostationary satellite. Let us assume that I am on earth at a particular place and remain there (moving with...

Asked on 01/03/2021 by user118752

1 answer

Gravitational potential energy of a polytropic sphere using the Lane-Emden equation

I apologise if this is a naive question. I've been 2 days in a mental puzzle trying to catch possible mistakes solving for the gravitational potential energy of a star,...

Asked on 01/03/2021

0 answer

Estimate Calories Burned from Arbitrary Limb Movement

I'm looking to create a model using a reasonable physics-based approach to estimate calories burned for arbitrary movement. To keep the scope fairly limited and tractable, I am looking at...

Asked on 01/03/2021 by JDS

0 answer

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