The Yerkes refracting telescope has a 1.00 m diameter objective lens of focal length 20.0 m. Assume it is used with an eyepiece of focal length 2.50 cm. (a) Determine the angular magnification of the planet Mars through this telescope. (b) Are the Martian polar ice caps right side up or upside down

Explanation:

The angular magnification of this telescope = - f₀ / fe = 20 / 0.025 = - 800

where f₀ = 20.0 m, focal length of the objective lens and fe = focal length of the eyepiece

b) since M ( angular magnification ) < 0 , then the martian polar ice cap is upside down

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.