Rates of Change (1 Viewer)

[0hNivlek]

Hey guys, got some problems with this damn topic -__-;

6. According to Boyle's Law, the pressure of a gas is given by the formula P = k/V, where k is a constant and V is the volume of the gas, find the rate of change in the pressure when V = 20.

8. A Balloon is inflated so that its increase in volume is at a constant rate of 10 cm^3/s. If its volume is initially 1 cm^3, finds its volume after 3 s.

Gosh, maths isn't going to count for sure now -____-.

THANKS.

 

[Timothy.Siu]

my rate of change from pj's into school uniform is about 30seconds

 

[addikaye03]

my rate of change from pj's into school uniform is about 30seconds

thats actually pretty impressive... reps to you!

OP: Q1 has already been asked someone in these forums,recently

 

[0hNivlek]

w00t found the first question. Damn should've checked the others first lol.

 

[Timothy.Siu]

first one u shud just differentiate it

P'=-k/v^2
sub in v=20
rate of change of pressure is -k/400 whatever

second one is it just 31? lol
1+3x10?