In 2050, astronomers discover that the nearest black hole in our galaxy has a very orderly planetary system, with 3 planets in circular orbits. The planets A, B, and C have orbits with circumferences that are exactly 20, 40, and 60 times the circumference of the event horizon, respectively. Even more amazing, the planets are inhabited! On October 1, 2065, the planets all line up, and the residents of planet B decide to measure the precise distances of closest approach to their neighbors A and C. They expect these distances to be the same, but this is not what they find. Describe what they find instead, and explain the reason for the discrepancy.

3

step-by-step explanation:

10 - 2.8 = 7.2

2 2/5 = 2.4

7.2 / 2.4 = 3

they should be similar or the same

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min