The gravitational force of a star on an orbiting planet 1' is F1. Planet 2, which is twice as massive as planet 1
and orbits at four times larger distance from the star,
experiences gravitational force F2
What is the ratio f2/f1? You can ignore the gravitational force between the two plane

In the resulting F2 generation, 3/4 showed the dominant phenotype, and 1/4 showed the recessive phenotype. For example, when a round seed line was crossed to a wrinkled seed line, the F1 generation was all round, and the F2 generation showed a phenotypic ratio of 3 round : 1 wrinkled.

Yw and pls mark me brainiest

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

happy to

pls mark as brainliest

wavelegth as in spectrum red oygbiv