1) do the rockets pass each other at a relative speed of .95c as viewed from earth?
2) you should not have to do anythin with time dilation since it is viewed from Earth and not one of the spaceships??
Homework Statement
Two relativistic rockets move toward each other. as seen by an observer on Earth rocket A of proper length 500m travels at a speed of .8c and rocket b of proper length travels at speed .6c. What is the speed of the rockets relative to each other? the earthbound observer sets...
Homework Statement
A 17.0 g block with a charge of +1.30 10-4 C is placed in an electric field e vector = (2000 i hat - 200 j hat) N/C.
(a) What is the electrostatic force on the block?
the force is 2.61E-1N but I am having trouble finding the angle.
Homework Equations
F=qEThe Attempt at a...
Homework Statement
A charge of 18 nC is uniformly distributed along a straight rod of length 4.7 m that is bent into a circular arc with a radius of 2.4 m. What is the magnitude of the electric field at the center of curvature of the arc? Homework Equations
E=KQ/R^2The Attempt at a Solution...
Homework Statement
Find the maximum and minimum values of the function F(x)=ln(x/(x^2+1)) on the interval (0,10]
Homework Equations
d/dx[lnu]=u'/u
The Attempt at a Solution
f'(x)=(1-x^2)/[(1+x^2)x]
f'(x)=0 when 1-x^2=0
1=x^2
x=1 which is the maximum
f(1)=-.693
what do I use...