The magnetic field inside a very long solenoid of length L0, radius R0, large number of turns N0, and current I0 is B0. If the length and radius of the solenoid were doubled, while keeping the number of turns and the current the same, the magnetic field inside the solenoid would be:

The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 × 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g