The twin who is "whisked away" at high speed and then returns (presumably at the same speed) will have aged less, by a factor of sqrt[1-(0.9)^2] = 0.436
<span>He will have aged 28.3 Earth years.
Hope this helps.</span>
The density is 4.76 gcm^-3
and if mass is in kg then density is equal to 4.76*10^-3
Answer the answer is A please tell me if this is correct
Explanation:
Answer:
chemical energy
Explanation:
Gives you energy to burn off
Answer:
Explanation:
Let v be the terminal velocity of the bar .
emf induced in the bar of length L
= B L v where B is the value of magnetic field.
current i in the circuit containing resistance R
i = induced emf / R
BLv / R
Magnetic force in upward direction in the bar
F = BiL
= BL x BLv / R
B²L²v / R
For attainment of uniform velocity
magnetic force = weight
B²L²v / R = mg
so current
i = BLv / R