Recent content by superjen

A doubly charged helium atom (mass = 6.68 x 10-27 kg) is accelerated through a potential difference of 4.00x 103 V. What will be the radius of curvature of the path of the atom if it is in a uniform 0.450 T magnetic field? the equation i was using was r = mV/|q|B m = 6.68 x 10^-27 V =...

ok, that worked :S:S

i got two answers one was 0.0000137T and 0.0000275T Neither of them worked.

Tesla

i just tried it, and it doesn't work. :S

An overhead electric power line carries a maximum current of 165 A. What is the magnitude of the magnetic field at a point 2.40 m directly below the power line? Soo... I = 165A L = 2.40m Equations i have learned areee (1) F = ILBsin(theta) (2) F = |q|vBsin(theta) (3) r = mv / |q|B...

so. say if this was the way i went Mass x g x (3.32-L) = force1 x 3.32 what would my mass and g be?

i've tried this, but i still get nowhere.

To determine the location of the center of mass of a car, the car is driven over a scale. When the front wheels are over the scale, the weight recorded by the scale is 5.70 x 103 N. When the rear wheels are over the scale, the scale reads 6.30 x 103 N. The distance between the front and rear...

A 204g ball falls vertically downward, hitting the floor with a speed of 2.57 m/s and rebounding upward with a speed of 2.10 m/s. Calculate the magnitude of the change in the ball's momentum. Answer: 9.53E-01 kg*m/s Calculate the change in the magnitude of the ball's momentum. i...

Three charges, Q1, Q2, and Q3 are located in a straight line. The position of Q2 is 0.290 m to the right of Q1. Q3 is located 0.147 m to the right of Q2. The force on Q2 due to its interaction with Q3 is directed to the (Give ALL correct answers, i.e., B, AC, BCD...) A) left if the two...

Use Implicit Differentiation to find y" if xy + y - x = 1 so far i got 1y + dy/dx - dx/dx = 1/dx then i did y + y' - 1 = 0 y' = 1-y i don't understand how to get the y" . i don't think i even have y' done right!

ok, that was stupid of me, i don't even know why i was having trouble with that now >.<

Sand is falling into a cone whose height is always 1/2 the diameter of the base. If the sand is falling at a rate of 1/2 cubic meters per min. How fast is the height increasin when the pile is 3 meters high? so far I've drawn my diagram and got this far. Given: h = 1/2 the base dv/dt =...

for the second one , would this be right? y' = (cosx)cosx[(-sinx)(LN(sinx) - sinx]