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Read the post above yours. I didnt edit the post to change it.

I just re-read that post and that's the answer I got but it's supposed to be ms^-2 and when I said 'the given answer I believe is wrong' was reference to the post above the my original post. That probably made no sense

Honestly Khourne, I think you may have misunderstood me, a satellite of 1000kg is not going to effect the value of g and thus they neglect it. Thats the whole basis of Newtons Law of Universal

I think i may have mucked number 3 up by substituting in 4 times Earths Radius instead of 5 I think the answer should be 3534ms^-1 Someone please correct me if im wrong.

1) Okay if you remember that gravitational force is directly proportional to the masses and inversly proportional to the square of the distance then you should be safe Just use g=GM/r^2 and sub in values and set the radius as 12756000 as that is 2 times the radius of earth as stated in the...

I wish i knew how to use latex like exploitable. Anyways here are my answers. If they are wrong let me know... Ill take mass of Earth to be 5.974x10^24 g=GM/r^2 0.098=((6.67x10^-11)x(5.974x10^24))/r^2 Now make r^2 the subject and you then get an answer of something 4.066x10^15 and thus...

Maybe not a hammer but a satellite in orbit but you neglect that. Anyways...

Dont need to memorise do rerive, use the formula sheet. As true as that is, the minor mass plays a role but for simplicity sake, we dont use it.

Alright the answer given i believe is wrong Gm/r^2 ((6.67x10^11)(1.99x10^30))/(696265000)^2 Answer is 273ms^-1

If you want to do well in all of them i.e ~95 exam mark. Then it will be hard If you want to do okay in all of them i.e ~ 83-90 then it will be easier.

I will most likely seek a tutor and then have english essays marked over and over again. If you memorise essays after they have been well written is it hard to then mould to fit the question?

What is the best way to 'practice' for English? What should I do to get me on my way?

I just got my marks back today and i was quite beat up by them =( English just takes that much out of me (time consuming) and the marks are still poor, Time wouldnt be an issue if i did okay but i spend the same amout of time as most people and they end up with 95% and i end up with 70% (in...

I honestly never thought enzymes were used to break down cellulose. I thought the only main option was cellulolysis or sulfuric acid and thats why it wasnt/isnt an economically viable option

Awesome 1000th post. Could you imagine the BoS being confused. Haha, That'd make my day.

Thanks so much UnrealAnchovies. Thanks so much for the clarification. I just got stumped when it said 'recent develments in the USE' Thanks so much.

What exactly do they want.?. Recent developments. It kind of makes no sense IMHO This is part of the 2002 paper so maybe they wont ask for something like this. Do they want the uses such as shampoo bottles etc I'm on my phone and am away from home so I dont have a computer and thus this will...

The mass is accelerating upwards with net acceleration, a. Here, the tension upwards in the string is doing two jobs. It is fully balancing the weight force downwards and supplying the required force upwards to accelerate the mass with the net acceleration of a...

Im pretty sure that was correct. Edit, i mean your answer before you edited your post. Not the sucking cock bit

f=mg+ma 1.5(0.5+9.8)+15.45N