038 10.0 points X-ray pulses from Cygnus X-1, a celestial X- ay source, have been recorded during high-altitude rocket ights. The signals can be interpreted as originating when a blob of ion ized matter orbits a. black hole with a period of 2.9 ms. If the blob were in a circular orbit about a black hole Whose mass is 30.1 times the mass of the Sun: what is the orbit radius? The value of the gravitational constant is 5.6?259 3-: 10 \" N - mgfkgz and mass of the Sun is 1.991 >