_____ is the rate at which a star moves across the sky
A) Proper motion
B) Reflective motion
C) Reflex motion
D) Intrinsic motion
A
You might also like to view...
Series/Parallel Circuits: Identical ideal batteries are connected in different arrangements to the same light bulb, as shown in the figure. For which arrangement will the bulb shine the brightest?
A. A B. B C. C
Which terrestrial planet has the highest-pressure (thickest) atmosphere?
a. Mercury b. Venus c. Earth d. Mars
Two tanks of gas, one of hydrogen, H2, and one of helium, He, contain equal masses of gas. The gram-molecular mass of He is twice that of H2. Both tanks of gas are at the same temperature, 293 K. Which statement(s) below is(are) correct when we ignore vibrational motion?
A. The total internal energy of the hydrogen is the same as that of the helium. B. The total internal energy of the hydrogen is 167 times that of the helium. C. The total internal energy of the helium is 1.67 times that of the hydrogen. D. The total internal energy of the hydrogen is 3.33 times that of the helium. E. The total internal energy of the helium is 3.33 times that of the hydrogen.
Lead melts at 327.44ºC with a heat of fusion of 23.02 kJ/kg. If a 10-kg solid ingot of lead at its saturation temperature is heated in a container at 500ºC, having an average convective heat transfer coefficient of 100 W/m2?K, determine the time to completely melt the ingot. Assume lumped heat capacity.
What will be an ideal response?