Due to the nature of the mathematics on this site it is best views in landscape mode. If your device is not in landscape mode many of the equations will run off the side of your device should be able to scroll to see them and some of the menu items will be cut off due to the narrow screen width. This definition can be turned around into the following fact.

Introduction RocketCat sez Propellant is the crap you chuck out the exhaust pipe to make rocket thrust. It's Newton's Law of Action and Reactionsavvy?

Fuel is what you burn to get the energy to chuck crap out the exhaust pipe. As I told you before they ain't the same. And any show-oaf who asks me "what about reactionless drives " is gonna get an instant RocketCat Atomic Wedgie.

Spaceships have it hard because space does not have all the advantages we take for granted on Terra. You want to make your automobile move? No problemo, just make sure all the wheels touch the ground. The wheels spin, they push against the friction of the road, the auto moves forwards.

There ain't no road in space. There ain't no nothing in space, that's why they call it space. There is nothing with friction to push against. In space your auto will literally spin its wheels while going nowhere.

As will your motor-boat and airplane uselessly spinning their propellers. So how are you going to get your poor spaceship to move? Newton's third lawthat's how.

Newton's third law in In a physics textbook Newton's third law says for every action there is an equal and opposite reaction. In English this means things will recoil.

If you fire a. You can see this even better if you are standing on something with little friction, like on a piece of glare ice or in a raft on the water.

You will go sliding backwards on the ice or overboard the edge of the raft, with your dislocated shoulder. But you will really move backwards fast if you are in a place with no friction. Like, say, in space.

So a rocket engine is just a way to fire some "reaction mass" propellant out the exhaust nozzle, so the recoil kicks the spaceship forwards. Because conventional propulsion won't work in space.

But don't panic, it is reasonably simple. Momentum is the object's mass times the velocity. Which is a fancy way of saying that an object with a tiny mass but an enormous velocity can have the same momentum as an object with a huge mass but a tiny velocity.

The practical effect is even if the mass of the propellant shooting out the engine is tiny compared to the spaceship, if the propellant is moving really fast the recoil will give the heavy space ship a substantial velocity in the other direction.

Example Say the good ship Polaris has a mass ofkilograms metric tons. If the Polaris is floating in space with a speed of zero, how fast will it be moving if it burns its engine for ten seconds? The mass of the Polaris iskg. Not bad for a ten-second burn.

Remember that "down" is in the direction the exhaust goes. But you are not paying any attention at all to what I'm saying right now, are you?

Your eyes braked to a halt on the picture, you're not even reading this caption. They are wearing Skintight suitsOK? Artwork by Clyde Caldwell ed note:SD Card. The Raspberry Pi needs to store the Operating System and working files on a micro SD card (actually a micro SD card for the B+ model, but a full size SD card if you’re using a B model).

Using the Point-Slope Form of a Line Another way to express the equation of a straight line. Point-slope refers to a method for graphing a linear equation on an x-y regardbouddhiste.com graphing a linear equation, the whole idea is to take pairs of x's and y's and plot them on the graph.

Standard Form Equation of Line-- What it is and how to graph it. Explained with examples and pictures and many practice problems.

1. Binning is mainly useful for reducing the subexposure duration, but this is relevant only if you feel that the calculated subexposure duration (unbinned) is unacceptably long.

This might occur, for instance, when imaging at a dark site, using a high read noise camera, a narrowband filter with a tight bandpass, and/or a high f ratio.

Calculations using mass, moles, and molar mass, n=m/M tutorial with worked examples for chemistry students. During a year the equation of time varies as shown on the graph; its change from one year to the next is slight.

Apparent time, and the sundial, can be ahead (fast) by as much as 16 min 33 s (around 3 November), or behind (slow) by as much as 14 min 6 s (around 12 February). The equation of time has zeros near 15 April, 13 June, 1 September and 25 December.

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Equation of time - Wikipedia