Mathematics Stack Exchange
Mathematics Stack Exchange

Questions tagged [physics]

Questions on the mathematics required to solve problems in physics. For questions from the field of mathematical physics use (mathematical-physics) tag instead.

This tag is for questions on the mathematics required to solve problems in physics and should not be confused with those on physics concepts. Pure physics questions should go in the Physics Stack Exchange. For questions in the field of mathematical physics, please use the tag instead.

5951 questions
0
votes
1 answer

Convert magnetic flux density to degrees

I have a digital magnetometer (compass) which outputs the following: Magnetic flux density ranging $\pm1229\mu\text{T}$ on the X axis Magnetic flux density ranging $\pm1229\mu\text{T}$ on the Y axis Magnetic flux density ranging…
barak manos
  • 43,109
0
votes
3 answers

Why the average of the velocity is simply the average of the velocities when acceleration is constant?

I am studying physics equations for constant acceleration and I am having quite a hard time understanding the following. The average velocity is given by definition as $v_{av-x}=\cfrac{x-x_0}{t-0}$ and this is just the slope of the line connecting…
Mr. Y
  • 2,637
0
votes
0 answers

rope extending under own weight - hooke's law

I am trying to solve following physics exercise but I cannot find my error. A rope with a cross section $A$, density $\rho$ and a length $l$ is hanging (staticly). I want to calculate the total length the rope extends under its own weight, under the…
flawr
  • 16,533
  • 5
  • 41
  • 66
0
votes
1 answer

Collision point of two vehicles with constant velocity

Given the constanct velocities of two vehicles that are on a frontal collison line and their distance from each other: How can I calculate the collision point?
craaaft
  • 731
  • 5
  • 11
0
votes
1 answer

The acceleration due to gravity for the Moon is one sixth the same for the Earth

I have to show the acceleration due to gravity for the moon is one sixth the same for the earth. The question gives the formulae and the variables to plug in for each, thus: Gravitational constant: $G = 6.673 \times…
Georgina Davenport
  • 247
0
votes
0 answers

Acceleration of two points problem (mathematical explanation)

There is a square board with two nails in corner A and B. We apply a torque M to the square board. Nail A can move freely on a track only in the $x$ direction and B only in the $y$ direction. The question is to calculate the normal forces from the…
DoubleOseven
  • 947
0
votes
0 answers

Potential energy of a Dipole interaction unexplained sign error.

Hello i've attactched a question as well as my attempt at an answer, I get the correct mathematical expression however I have a sign error for both the terms in the bracket. I can't work out what I'm doing wrong to have caused these errors to…
Goods
  • 341
0
votes
1 answer

Is the derivative of the velocity with respect to time give us the sum of the forces?

is the derivative of the velocity with respect to time give us the sum of the forces, when the forces as function of the distance? I know the Acceleration is the derivative of the velocity with respect to time, but I did not understand that the…
Tony
  • 79
0
votes
1 answer

Find the maximum displacement given trajectory.

I'm trying to find the maximum displacement of a object given the trajectory. The trajectory is given by the equation: $$p(t)=-11.79t^2+25.9t+4.35$$ Looking around online, the closest article I've seen says that the maximum displacement is when…
Alex Anderson
  • 15
0
votes
3 answers

Physics Question - Find the acceleration of an airplane

The problem states: You are sitting in an airplane when it encounters sudden turbulence. During the turbulence, you feel lighter for a few moments. If your apparent weight during this time seems to be about $70\%$ of your normal weight, what are…
Claire
  • 73
0
votes
2 answers

Oil spill including volume,area but unknown thickness

If I know total gallons of oil spilled is 94,000 gallons and area is 5 miles by 2 miles long how do I find total thickness in millimeters
Nate
  • 21
0
votes
1 answer

When I know gallons and I know total area how to I get total inches

If I know total gallons of oil spilled is 94,000 gallons and area is 5 miles by 2 miles long how do I find total thic
Nate
  • 21
0
votes
1 answer

Setting up an acceleration problem for physics

Problem: "You are running down a football field (let’s call this the x-direction) with a constant velocity of 4.5 m/s when a player from the opposing team runs towards you, hitting you in a direction perpendicular to your motion (let’s call this the…
Claire
  • 1
0
votes
3 answers

calculating you weight if you $100\text{Km}$ above the earth etc.

Qualitatively, how would your weight be different if you weighed yourself: $100\text{Km}$ above the earth? $100\text{Km}$ above the moon? near the equator if the earth's rotation were $10\text{h}$? I don't know how to even start this question.
Ella
  • 91
  • 1
  • 1
  • 6
0
votes
1 answer

unit vectors: solving with component method and graphical method

P and Q are vectors in the X , Y plane, have the same magnitude, and are perpendicular to each other. If Q=3.0i+4.0j. What is P?
Vince Espiritu
  • 11
1 2 3
…
39 40