I would say our solar sustem will die when the sun dies or a black hole sucks it up.
Answer:
(a) 67.44 second
(b) 529.5 revolutions
Explanation:
ωo = 49.3 rad/s
α = 0.731 rad/s^2
(a) Let it takes t time to come to rest.
ω = 0
Use first equation of motion for rotational motion
ω = ωo + α t
0 = 49.3 - 0.731 x t
t = 67.44 second
(b) Let it turns an angle θ rad before coming to rest. use third equation of motion for rotational motion.
ω^2 = ωo^2 + 2 α θ
0 = 49.3 x 49.3 - 2 x 0.731 x θ
2430.49 = 1.462 θ
θ = 1662.44 rad
Number of revolutions = θ / 2π = 1662.44 / 3.14 = 529.5 revolutions
So we want to know what is the magnitude of the magnetic force F on charge Q=5.0*10^-7 C if the charge is moving with speed v=2.6*10^5 m/s perpendicular to the magnetic field B=1.8*10^-2 T. So the formula for the Lorentz force is F=Q*v*B, where Q is the charge, v is the speed of the charge and B is the magnitude of the magnetic field. If the speed of the charge is parallel with the magnetic field, the force is 0 N. I'm going to assume that the screen and also the magnetic field B is perpendicular to the speed of the charge. So we simply plug in the numbers in the formula and get the magnitude of the force F=0.0023 N = 2.3*10^-3 N
Watch them and make sure they dont gop out in the street because they will die
Speed= freq x wavelength
if freq is doubled the wavelength will halve for constant speed