Homework Statement
A proton has an initial speed of 3.5×10^5 . What potential difference is required to reduce the initial speed of the proton by a factor of 2?
Homework Equations
KE=.5*m*v^2
EPE=q*V
The Attempt at a Solution
I did KE=.5(1.67x10^-27)(3.5x10^5/2)^2 and then divided...
Homework Statement
Arlene is to walk across a "high wire" strung horizontally between two buildings 14.0m apart. The sag in the rope when she is at the midpoint is 10.0 degrees. If her mass is 52.0kg , what is the tension in the rope at this point?Homework Equations
Fnet=ma
a=0 so fnet=0
The...