A scientist wants to predict the next time there three comets will be at perihelion, the point in an object's orbit at which it is closest to the sun. Write one letter in each box to correctly complete the table. A. 2020
B. 2022
C. 2033
D. 2039

Comet name:
Encke
Wild 2
Crommelin

Semimajor axis of orbit (AU):
2.21
3.44
9.2

Last reached perihelion:
Mar-17
Jul-18
Aug-11

Next time it will reach perihelion:
(A, B, C, or D)
(A, B, C, or D)
(A, B, C, or D)

If you quadruple the temperature of a black body, by what factor will the total energy radiated per second per square meter increase? 1,024 64 16 4 256 submit answer

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.