Recent content by studentxlol

Hello. Gravity is by far the weakest force in the universe, yet it is the only force with an infinite range. This fact about gravity doesn't make a whole lot of sense to someone like me; someone with little knowledge of Physics. Why doesn't it make sense? It doesn't make sense because...

Hello. For free fall to occur, does the rate at which you fall have to equal the gravitational field strength at that point above the surface? If I'm in an airplane and accelerate towards the ground at an acceleration of 9.8ms^-2 equal to that of the Earth's gravitational field, then I...

Newbie question -- about Schroedinger's Cat Perhaps I'm looking at this question with a conventional classical frame of mind but I just don't understand the basic principle and would like an explanation. Schroedinger's cat is assumed to be both alive and dead inside a box. This is because...

resolve horizontally, to get an equation for P in terms of Q, let it be (1). Now resolve vertically, to get another equation in terms of P and Q. Now substitute (1) in this equation to find Q. So have now got Q, with this i can easily find P by substituting the value of Q in any of the...

No good. I need full method.

No idea how to do that,

Here's a better pic. For question 6, I need to go about finding the normal contact forces P and Q. How do I do that with the info I know?

Homework Statement I'm struggling with question 6 and 7 on this exercise. I have no idea where to start so basic help would be needed to get me started. Thanks!

Read the math in the image below Is it possible to integrate the rational function using that reduction formula. If yes, how do I go about doing it? Keep it simple, I'm new to this (And I missed a lesson) Thanks!

I'm confused. I was making up some of my own problems involving higher powers of x to integrate. For example: \displaystyle\int x^5 e^{5x}dx I set about going about finding \frac{dy}{dx} up to \frac{d^6y}{dx^6}. u=x^5 \frac{du}{dx}=5x^4 \frac{d^2u}{dx^2}=20x^3 \frac{d^3u}{dx^3}=60x^2...

1. Suppose a cruise ship docked at a port. Passengers enter and leave the ship through a door located halfway up the ship. At the bottom of the doorframe, there is a square piece of of metal pertruding out from the ship that bridges the gap between the doorframe and the external stairwell...

It's generally accepted that nothing can travel faster than the speed of light (expect hypothetical particles that have yet to be discovered). This is in accordance with general relativity. However general relativity seems to break down momentarily after the big bang because matter must have...

Homework Statement Solve the differential equation: \frac{d^2y}{dx^2}=3x^2-10x+3 The Attempt at a Solution \int\int \frac{d}{dx}\frac({dy}{dx})3x^2-10x+3=\frac{1}{4}x^4-\frac{5}{3}x^3+\frac{3}{2}x^2+c Does that make sense mathematically?

Suppose a perfectly spherical sphere were to exist - Pefectly uniform even at the atomic level. Then hypothetically, could this sphere withstand infinite pressure and so travel into a black hole without being destroyed? There would be no 'weak points' on a perfect sphere causing it to break...

I know the conventional way to answer this question is to measure its length in cm. But then I thought everything is relative to another thing so the length of the piece of string is X cm relative to me but what if you zoom in on a section of string and measure the twists and turns... Then go...