If the difference in apparent magnitude between stars changes from the fourth magnitude to the third magnitude, the brightness has changed about a0 times.

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.

What characteristics of hv2112 make it the best candidate to be classified as a thorne-zytkow object?