Yeah, for part one:
H=0.5gt^2
t^2 = 12/9.8
t= (12/9.8)^.5
v=u +at
v= 0 + (12*9.8)^0.5
this we could acheive
But for part 2:
Velocity of eflux changes with time. thus
D(vol)/Dt = A*(2gh)^.5 = ((Pi*d^2)/4)*dh/dt
Is this correct?
A Coil with an inductance of 20 H and a resistance of 10 Ohms is connected in series with a battery of emf 12 V and a switch. Calculate the
a. rate of change current and the final current.
b. current after 3.0 seconds.
A cylindrical tank of diameter 90 cm rests on top of a platform 6m
high. Initially the tank is filled with water to a depth of 3m. A plug
whose are is 3 cm^2 is removed from the orifice on the side of the
tank at the bottom.
1) at what speed will water strike the ground?
11) how long...
1.A uniform Disc of Radius R is rotating in its own plane with angular velocity w when it is placed flat on a rough table. If u the coefficient of sliding friction is independent of velocity show that the time taken for the disc to come to rest is
(3RW)/(4ug). How does the kinetic energy of...
Two stars, masses 10^20kg and 2* 10^20kg respectively, rotate about their common centre of mass with an angular speed of w. Assuming that the only force on a star is the mutual gravitational force between then, calculate w.
Distance = 10^6km and that G= 6.7*10^-11Nm^2/kg^2
general triangle!
a,b,c are length's
A,B,C are opposite angles
Sorry but i made a mistake in the first integration question
its suppose to be 1/sqrt(1-x^5)
When i used this integration in mathematica 5 : i got something like hypergeometric2f1....
Can u help me out!