Based on the information below, both Polaris and Sirius are much hotter than the Sun. However, on Earth, we feel the heat from t
he Sun and not from Polaris or Sirius because? A.Earth’s seasons are caused by rotation around the Sun.
B.a year on the Sun is less than a year on Polaris or Sirius.
C.Polaris and Sirius are farther north than the Sun.
D.Polaris and Sirius are farther away than the Sun.
D. Polaris and Sirius are farther away than the Sun.
Explanation:
The radiation intercepted by Earth is inversely proportional to the square of the distance from the source. Polaris and Sirius are substantially farther away than the sun.
Polaris, for example, is about 27 million times farther away, so even though it is 4000 times brighter, we receive on the order of 5×10^-12 as much radiation from that star as from the sun.
We feel less heat from stars other than the Sun because they are farther away.
The mineral water in hot springs can also help reduce stress by relaxing tense muscles. Meanwhile as your body temperature rises in the bath, and then cools once you exit can also help you relax and fall into a deeper sleep.
Germs stick to the oil on your hands, and washing with just water doesn't work because oil and water don't mix, but soap dislodges the germs and oil from your hands
