Cygnus X-1 and LMC X-3 are black holes if the masses of the ...

[kshipps]

Cygnus X-1 and LMC X-3 are black holes if the masses of the unseen companions perhaps may be
 
  a. less than 3 solar masses.
  b. more than 3 solar masses.
  c. between 0.4 and 1.4 solar masses.
  d. less than 0.4 solar masses.
  e. not larger than the masses of the stars that we can see.

Question 2

A wave on a lake is found to have a wavelength of 2 m and a frequency of 0.3 Hz. What is the speed of this wave?
 
  What will be an ideal response?

[Briannahope]

Answer to Question 1

b

Answer to Question 2

0.6 m/s

[kshipps]

Thanks for the timely response, appreciate it

[bassamabas]

Excellent