Recent content by goldfish9776

Homework Statement my ans is lnx = (-1/y) + c (-1/y) = lnx -c y = -1/ (lnx -c ) , but the answer given is (-1/ln x )+ C , how to get the answer given ? Homework EquationsThe Attempt at a Solution

i think the first one is correct , because the shearing force must be applied in 2 different direction , so that the object will be 'teared' . i think the second 1 is incorrect

Homework Statement why the shearing force acting on the object in the first diagram is in different direction , while in the second photo , it's in same direction ?Homework EquationsThe Attempt at a Solution in my opinion , it should be in different direction , because the shearing force must...

2 /0.8 = 2.5 1 / (0.4^2) = 6.25 so , the ans is It's 6.25 times , not 6 times?

yes, but i still can't understand the velocity increases by 6 times...

Homework Statement how to know that the nozzle increases the velocity of water by 6 times? it's not given ... and no data for initial velocty given Homework EquationsThe Attempt at a Solution

can you be fore specific , telling me how should i start with ?

i still didnt get the idea, can you explain further?

do u mean R(x , y) , how to do it ? i have never studied this before

that's why i multiply the whole equation with the integrating factor to get the exact equation , however , i didnt get it . Is my working totally wrong ? or which part is wrong ?

Homework Statement is my integral R(x) and R(y) correct ? why it look so complicated ? Homework EquationsThe Attempt at a Solution

If cosh3x then e^x is substituted with e^3x ??

Homework Statement I was told that coshx = (e^x + e^-x) / 2 , why cosh2x = (e^2x - e^-2x) / 2 ? Homework EquationsThe Attempt at a Solution

Homework Statement why the f(t-1) isn't = 1-1 = 0 ? since f(t) = 1 , a=1 Homework EquationsThe Attempt at a Solution

what is the purpose of not making L =r , but make L less than r ? isn't the L is the factor = r ?