# Recent content by ghostman_on_3rd

1. ### Enviro through time question- help plz !

cheers, gl for ees :D
2. ### Binomial Theorm

o i c, you didnt bother with the negative in -4x/5 x = 2/3
3. ### Binomial Theorm

hello, i need help with this question: Find the greatest term in (5-4x)^12, if x = 2/3 Books answer: 12C4 (5^8)(8^4)(3^-4) My answer: 12C5 (5^7)(-8^5)(3^-5)
4. ### Enviro through time question- help plz !

hi im having trouble answering this question: "suggest a reason why the levels of ultraviolet were higher on land than in the ocean." Thanks in advance
5. ### Simple harmonic motion question

nice ! i understand, thanks man
6. ### Simple harmonic motion question

hi im having trouble with this question, i need help. A point moves with SHM; if when at distances of 3 and 4cm from the centre of its path, its velocities are 8 and 6cm/s respectively, find its period and its acceleration when at its greatest distance from the centre. thanks in advance<!--...
7. ### Simple Harmonic motion

lol pretty much u said same thing as i did....
8. ### Simple Harmonic motion

i assume the book's answer is wrong( -2pi m/s^2)? since no one got the same thing.
9. ### Simple Harmonic motion

book's answer is -2pi m /s^2
10. ### Simple Harmonic motion

Bit confused with shm...how do you do this question? A particle moving with SHM starts from rest at a distance of 8m from the centre of oscillation. If the period is 4 seconds, find the initial acceleration.
11. ### Projectile motion, plz help

woot i got it cheers guys
12. ### Projectile motion, plz help

hi, how do you this ? A body is prjected from a point 80m above the ground with a velocity of 20 m/s at an angle of 60 degrees above the horizontal. Assuming the ground horizontal, find when and where it will strike the ground thanks in advance
13. ### Growth and decay

Hi how do you do this question? An oven has been heated to a constant temperature of 250*c. An object with a temperature of 10*c is placed in the oven and after 15minutes its temperature is measured as 70*c What will be the temperature of the object after 30minutes? thanks in advance

cheers!
15. ### Growth and decay

Hi can someone check the answer for me? i got 5488kg/m^2 but the answer says 8488kg/m^2 1. Air pressure at an altitude of a metres is given in kilograms per square metre by the formula p = p0 e^ka, where k = -0.00012. If the pressure at the earth's surface is 10000kg/m^2, what is the...