what area of science has helped astronomers the most in determining the life story of a star?
What will be an ideal response?
physics
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Given that 1.00 in. = 2.54 cm, how many square centimeters are in 1.00 square inch?
A) 1.59 B) 2.54 C) 5.08 D) 6.45
Estimate how many pennies would you have to stack to reach from the floor to an average 8-ft ceiling
A) 2 × 103 B) 2 × 102 C) 2 × 104 D) 2 × 105 E) 2 x 106
Lighting is a place where lots of energy can be saved
What will be an ideal response?
The fundamental frequency of a above middle C on the piano is 440 Hz. This is the tenor high A, but a convenient note in the mid-range of women's voices. When we calculate the wavelength, we find that it is
a. much shorter than the length of either a man's or woman's lips. b. shorter than the length of a man's lips, but about the length of a woman's lips. c. longer than a woman's lips, but about the length of a man's lips. d. much longer than the length of either a man's or a woman's lips. e. about the same length as either a man's or woman's lips.