Calculate the minimum angular speed of the wheel for light that passed through opening A to return through opening C to reach the observer. In an experiment to measure the speed of light using the apparatus of Fizeau, the distance between the toothed wheel and mirror was 10.61 km and the wheel had 705 notches. The experimentally determined value of c was 2.95 × 108 m/s . Answer in units of rad/s.

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )