Which of the following statements about features on the sun is true
a. prominence's look dark in regular photographs.
b. solar flares form when prominence's connect.
c. the number of sunspots on the suns surface is always the same.
d. sunspots can greatly increase the solar wind.

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?

See the attachment and solve question 5th