A point charge of + 1 C is located at x = 3 m and a second point charge of -6 C is located at x = 4 m. Where should a third charge of +5 C be placed so that the electric field at x = 0 m is zero? A) 1.70561
B) 0.559017
C) 3.52767
D) 3.20713
E) 1.6641
F) 0.695048
G) 4.38529
H) 1.5667
I) 0.930484
J) 4.47214
[Each of these letters are choices]
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A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.