Recent content by joeghal87

then there is no way you can get that crazy E33 number ! u'll get smth around E21

Borek is right. Your calculations are actually very strange As for the radius, it must be the sum of the radius of Earth + the height of the satellite

hello there, please provide some details about your calculations and about the units of the answer. It's 10.5 what ? (mention the units)

Hello there, i don't see how we can help you in this one, for me the answers are obvious but anyway : when two vectors are in the same direction and pointing to the same way, an addition results in a third vector who's module is the sum of the previous two when two vectors are not in the same...

here : http://www.studyphysics.ca/2007/20/01_kinematics/18_angle_projectile.pdf this should make that confusion of yours go away ;)

the Magnus effect is a consequence of air resistance... I don't see how you want to compare them. Magnus effect occurs for spinning objects.

Hello there, here is the explanation : what you did is absolutely correct, except for the Force formula. The force is the change of momentum per unit of time and not the value of the momentum per time. So its F = dp/dt and not F = p/t Therefore, the conceptual aspect that you missed in the...

the purpose : absolutely nothing at all :) actually your book just didn't simplify the expression to the fullest... if you divide by 2 the numerator and deminator in the final expression reached from the book, you get to the one I found... like I said, they should have done the simplification...

this link should help you out http://www.mechanicsmadeeasy.com/html/ms_projectile.html

Hello there, here is the problem, your second derivative is wrong it should be: y"= [2(x^2+x-2)^(1/2)-( {((2x+1)^2)/(2(x^2+x-2)^(1/2))} )] /(2(x^2+x-2)) then what you have to do is multiply by (x^2+x-2)^(1/2) both the numerator and the denominator thus you'll obtain this form : y" =...