Molecular clouds have "what it takes" which is:
A: lots of Hydrogen
B: some Helium
C: more than 100 times the mass of the Sun
D: all of the above
E: none of the above
Ans: D: all of the above
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How could the children in this photo best improve their balance with the help of two equal-mass weights?
a. Hold one weight in each hand with arms extended as shown in the photo. b. Attach a weight to each ankle. c. Place a weight in each of their left and right pockets in their trousers. d. Hold one weight in each hand with arms held down instead of extended. e. Hold one weight in each hand with one arm extended and one held down.
Polarization: Three ideal polarizers are oriented as follows: The axis of the second polarizer is at an angle of 59.0° relative to the first one. The axis of the third polarizer is at an angle of 31.0° relative to the second one, so the axis of the axis of the third polarizer is perpendicular to the axis of the first one. Unpolarized light of intensity 18.6 W/m2 is incident on the first polarizer.(a) What is the intensity of the light after it passes through all three polarizers?(b) What is the intensity of the transmitted light if the second polarizer is removed?
What will be an ideal response?
Which of the following is not a characteristic of the jovian planets?
A) They have higher average densities than the terrestrial planets. B) They have thick atmospheres. C) They are primarily made of hydrogen, helium, and hydrogen compounds. D) They are located further from the Sun than the terrestrial planets. E) They have rings.
An air mass forming over the Gulf of Mexico would be classified as ______________
Fill in the blank(s) with correct word