HallsofIvy was correct, the gravitational force is just its weight, its simple
use desnity of aluminium along with its volume to find the mass, then use this is W=mg formula to find the the weight force
In terms of the pressure question, i know the area and velocity of the fluid at 2...
hi guys
200g copper calorimeter, 200g of water, both intially at 30 degrees. Aluminium rod added to the system, with mass of 250g, final temp is 100 degrees. 10g of water is converted to steam.
first its asking to calulate how much energy is reuiqred to vaporize those 10g to steam
then...
hi guys
if you have an aluminium sphere of volume 0.006 metres cubed, how do you find the gravitational force acting on the sphere, as well as its acceleration (ignoring water resistance)
Also, if your given the area and velocity of a fluid at two points of hose, how can you find the...
hi guys
im still stuck on this question, it has really got me stumped
i know that for the form
√a² - x².dx
x=asinθ, dx = acosθ.dθ
but i just can't seem to put it together
hi guys
im debating whether this question requires trignometric substitution or just normal substitution.
∫ √9-2(x-1)²
Im leaning towards normal substitution, with u = x-1, but I am not sure
Any ideas
Thanx heaps
hi guys
yeh, I am still going through revision, and I am also stuck on this question.
*integral sign*(upper limit 4, lower limit 2) x/sqrt(3x^2 + 4).dx
When i look at this, i think of letting u = 3x^2 + 4, then bringing that sqrt to the top,solving for dx, and then find the integral, and...
ok, I've got my answer, unfortunately i don't kow if its right, we don't get solutions for this exercise
-1/3 *exponential* ^ -3x . x^2 - 1/9*exponential*^-3x . 2x - 2/27*exponential*^-3x
ok, once i sub u, du, v and dv into the integral by parts formula, i have to assign, u and dv again to:
-1/3 exponential ^ -3x and 2x
so is dv assigned to the exponential again, like in the first case?