Recent content by psilovethomas

Homework Statement An electron has momentum of magnitude 2.74 10-22 kg · m/s. What is the electron's speed? Homework Equations p=ymv, where y=gamma The Attempt at a Solution v=p/m, which is wrong. Any suggestions?

Homework Statement A tiny sphere with a charge of q = +8.8 µC is attached to a spring. Two other tiny charged spheres, each with a charge of −4.0-µC, are placed in the positions shown in the figure, in which b = 4.1 cm. The spring stretches 5.0 cm from its previous equilibrium position...

Homework Statement A total charge of 7.47x10^-6 C is distributed on two different small metal spheres. When the spheres are 6.35 cm apart, they each feel a repulsive force of 15.5011 N. How much charge is on each sphere? Homework Equations F=k Qq/r^2 Q1+Q2=7.47x10^-6C The Attempt...

Doc Al, Thanks for your response. I'm pretty confident in that answer as well. However, I began second-guessing myself because everything seems to different when it's angular and not linear.

Is angular acceleration zero in this situation? A cylindrical space station located in distant space, rotates with constant angular velocity about its axis. An astronaut rotates with the station and is located at the perimeter, a distance R from the axis.

so it is 5* .173?

would the .179 be multiplied by 5 because there are 5 lights?

so 40W/230V=.179A?

I need help with this electricty problem:( Homework Statement At the end of a long day, your instructor finally sits down to write your final examination, after making a cup of coffee he goes into his office, turns on the five, 40-Watt lights, and starts writing. How much current is...

Why is it not the gravitational force of the moon?

I cannot find a different value for G

Then what is the appropriate G?

Yes, or also said the attraction between me and the moon

Homework Statement F=GmM/r^2 Homework Equations mass of self=109kg mass of moon=7.36x10^22kg r=384,403,000m gravity of moon=1.63m/s^2 The Attempt at a Solution F=((1.63m/s^2)(109kg)(7.36x10^22kg))/(384,403,000)^3 Am I doing this correctly?