The Assumptions of MWI]]>

Two massive spherical bodies (Osmium, minimum radius 900km, 5.08m/s^2 surface gravity) orbit each other with a solid or...

Ring Suspension Between Binary Masses]]>

How far will a box slide if its initial velocity is 1.5 m/s, kinetic friction is 0.15 and the object is 30 kg

a= (kinetic friction)(acceleration due to gravity) and

V(final)^2 - V(initial)^2 =...

how far will the box slide?]]>

Hi,I have been struggling on this problem for a whole day,looking for someone to sort it out!

My question:(please see the attached diagram as well)

Consider 2 spheres A and B,having different masses (m and M) but equal...

Kinetic energy and momentum]]>

I have the raw data in .csv file which has

View attachment 84121

I have to find the logic for the above raw data, to get

How to calculate 1.5 order wheel torque fluctuation (3 Cylin]]>

Find the transfer function , H(s) by two methods. Use Nodal analysis with Cramer's method, and decompose into simpler sections and use the property, H(s) = H1(s) * H2(s).

H(s) = H1(s) * H2(s)

H(s) = Vout/Vin

Cramer's Rule. X = Dx/D :...

Transfer function of cascaded filters]]>

So, here is a brief introduction]]>

Since the tangent moves at uniform angular...

Acceleration of particle along the curve]]>

X is a point along the x axis.. Sorry about the fault in the question]]>

Virgo Supercluster]]>

"Remember that by Kepler’s second law, the planets each sweep-out the same area in the same amount of time. The outer planets’ elliptical orbits are considerably larger...

Can Kepler's 2nd Law be applied to more than one planet?]]>

When an exercises say "

In this exercise I'm trying to find the classical beta function (β-function) for the assciated couling.]]>

Of course that...

Single photon double slit, reset detector after each impact]]>

I'm planning to take the physics GRE subject test in the near future. I have a good undergrad education, so I was recommended to pick up a general physics textbook and to read it completely as a study review.

The question is: what textbook? I know the names of the most common ones...

Textbook for GRE subject test preparation]]>

Theorem 8.4.2 If V is a finnite dimensional vector space, and T: V-> V is a linear operator then the following are equivalent.

a) T...

Linear Algebra; Transformation of cross product]]>

I know that the following problem is really long but bear with me. The questions I have are quite simple.

The problem: Calculate the speed profile of an inviscid fluid around a perturbated cylinder. The radius of the cylinder...

Stream around a perturbated cylinder]]>

- REU at CERN (I figure my chances of getting in are even lower if I don't apply!)
- University of Michigan REU
- University of Colorado...

2015 Summer Internships Thread]]>

Mass of Mars: 6.39 x 10

Radius of Mars: 3.39 x 10

Constant G: 6.67 x 10

2. I used the equation g = GM / r

Calculate gravitational field strength above surface of Mars]]>

'Our universe had a beginning. But it is not required, though. It could well have been eternal.'

My question is,

Can matter/energy be eternal? If yes, has any mechanism been proposed for such an existence?

I want to add a feature to this charger, a switch, that changes the outpunt, and...

Modifying a phone charger from 5V down to 3V&4V]]>

Mathematical Physics graduate programs?]]>

Lower the number the better. I wish computer monitors can be used to test for Tetrachromacy. To learn more about Tetrachromacy go here:

http://nymag.com/scienceofus/2015/02/what-like-see-a-hundred-million-colors.html

I...

How good is your color vision?]]>

How to turn thermal energy of room into work]]>

I am confused about the vertex ## 2γ\toμ^+μ^-...

Production of Pure QED Atom]]>

If an object is 500 N normally but has an apparent weight of 300 N when submerged in water, what is the density of the object?

ρ

Buoyancy force and density]]>

It is known that total resistance of the circuit is dependent on the position of the wiper in potentiometer ##R##. Find the biggest and the smallest possible total resistances of the circuit. Potentiometer resistance is...

Total resistance in the circuit]]>

I would like to understand why "bushings" that are used as insulation for high power electric cables in transformers, and which are often made out of porcelain or glass, I would like to understand why they have this form of "skirts" ? Why aren't they just as a simple cylinder?]]>

Q1) How can I know if this graph is ln(x) or e^x

View attachment 84143

(I thought it was e^x graph since there's no x-axis intercept , however the answer in marking...

questions on ln and e^x graphs]]>

Programming languages for aerospace]]>

I'm having problems figuring out the difference between a coil and a solenoid. My book provides two equations for magnetic field, and they are similar, but one depends on the radius (coil) while the other depends on the length...

Coil vs solenoid]]>

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38)

c^2=a^2=b^2-2abcosC...

Calculate the Net Force]]>

Determine, using the values given in TABLE A, the current I in the circuit of FIGURE 2 by:

(a) mesh analysis

(b) nodal analysis.

Any help verify for part (a)? And to help me get started with (b) as V3 is driving me nuts.

AC circuit analysis -- mesh and nodal]]>

Doing a vertical force balance 2Fcosθ=mg...

Minimum force required to form sphere]]>

Printers have been communicating with computers for 3 decades. Why must it ALWAYS be such a painful process to get them to talk to each other??

I have never - in all the time I've...

Talking to Printers]]>

Why beryllium for neutron multiplication]]>

Calc based physics with no calc experience/how to learn?]]>