Could someone explain gravitational potential to me please? I can do the questions via formal but I don't really get it... Can anyone think of anything strange that could come up?. Also If I cover everything on the spec that should be enough right?
thanks for this but can you please tell me how volume/area = v ? thanks
Well 2.0*10^-4 is how much volume of water is flowing past one point each second, so it is cross-sectional area * velocity, and you want just velocity, you divide it by the cross-sectional area to get velocity.
Plus you can just look at the units, to get the unit of velocity (ms^-1) using m^3s^-1 (meters cubed per second) and m^2 (meters squared), simply divide the first by the second and you're left with ms^-1 (meters per second).
Could someone explain gravitational potential to me please? I can do the questions via formal but I don't really get it... Can anyone think of anything strange that could come up?. Also If I cover everything on the spec that should be enough right?
Nothing strange should come up, but if it does we cant really prepare for it.
for 13 us v=1/4pi epsilon nought*(q/r) then use v4=v-16 then you have 4/x=16/(120-x) then working out you get x =24 or you could do it as a sort of ratio so 4+16=20 and 4 in proportion of that is 5 then 120/5=24
then for 24 it rotates twice as fast so cuts twice as much flux so there has got to be 2 waves in the graph space, and then as it is double omega then amplitude will double so its c
19. A particle of mass m moves in a circle of radius r at uniform speed, taking time T for each revolution. What is the kinetic energy of the particle?
19. A particle of mass m moves in a circle of radius r at uniform speed, taking time T for each revolution. What is the kinetic energy of the particle?
Ok. W=2pie/T. V=wr so v=2rpie/T, square it and sub into Ek=1/2mv2
23. Protons, each of mass m and charge e, follow a circular path when travelling perpendicular to a magnetic field of uniform flux density B. What is the time taken for one complete orbit?
23. Protons, each of mass m and charge e, follow a circular path when travelling perpendicular to a magnetic field of uniform flux density B. What is the time taken for one complete orbit?
23. Protons, each of mass m and charge e, follow a circular path when travelling perpendicular to a magnetic field of uniform flux density B. What is the time taken for one complete orbit?