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Omg I get it now!!!!!!!! Thanks sooooo much !!! I had no idea that the rockets stopped in mid air and then turned on there next rocket Sent from my iPhone using Tapatalk

Ohhhh so if we are constantly burning fuel from the same rank the whole way , the ship would be experiencing too many g's causing a black out. Hence dumping them will keep the acceleration at a constant level instead and that constant acceleration would be under say 6 g's to stop people's dying...

I don't think so :/ wouldn't dumping empty fuel tanks allow for greater acceleration in the upward direction ? Sent from my iPhone using Tapatalk

Ohh so do you mean I should talk about the re-entry ? Because stoping acceleration upon launching would seem counterintuitive :/ Was my answer complete rubbish or did I get some marks Sent from my iPhone using Tapatalk

Multi-staged rockets are a necessity when it comes to space exploration. In order to launch a rocket off the ground, it will need an enormous velocity to escape the pull of gravity. This 'escape velocity' is hard to achieve due to the mass of liquid rocket fuel (approx 0.01% of the volume of its...

For a rocket to return to earth is must obviously re-enter the earths atmosphere. During the rockets re-entry a lot can go wrong if it's angle of entry is not between 2 and 7 degrees ( probably a bit off ). This angle is defined as the optimum re-entry angle. If the rockets angle of re entry is...

Hey I'm interested in these notes and thinking of buying 5 or 6 for a bulk price. Could I please have a sample of Robert frost ? glennmathewthorn@bigpond.com

wow I go to southern highlands christian school where the median Atar is probably 65-low 70's.

Bump

Is there a difference between truss girder and box girder bridges ? Is a box girder just more specific ? If so what would each look like. What makes a truss girder bridge different from the rest ?

As some of you guys may know I'm doing engineering by distance education hence I won't have a teacher to answer my questions. Google is unspecific at times so i guess I'm relying on you guys

Hey guys!! I have thrown myself into a hole of doom by doing engineering through distance education. I am relying on people's notes, past papers and I am look for a textbook to learn from. WHAT IS THE BEST TEXTBOOK FOR ENGINEERING ??!! Also if anyone has some notes please let me have them ;( !!!

If I do the -GmM/r method my solutions are different!??

Re: HSC 2015 4U Marathon Did you guys look at these questions at the start of your hsc year and wwant to crawl in a hole?

It was the CHANGE in potential energy btw

Yeh that's what I thought :/

What would be the change in gravitational potential energy of a 68kg person on surface of the earth who then climbs to the peak of Mount Everest 8848metres high?

I'm pretty sure Ill get the maths since it's no harder then 4unit and is mainly physics ?

If I memorise ALL of these notes will I get >80??

Nah I don't need a teacher I have you guys. My physics and 4unit math with help