The Arecibo radio message to extraterrestrials contains information about the structure of DNA
a. True
b. False
Indicate whether the statement is true or false
True
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The force that holds two atoms together is called a(n) ________
Fill in the blank(s) with the appropriate word(s)
A potter's wheel, with rotational inertia 46 kg ? m2, is spinning freely at 40 rpm. The potter drops a lump of clay onto the wheel, where it sticks a distance 1.2 m from the rotational axis
If the subsequent angular speed of the wheel and clay is 32 rpm what is the mass of the clay? A) 8.0 kg B) 5.4 kg C) 7.0 kg D) 8.8 kg
The ________ focus reflector needs only a single optical surface to form images
Fill in the blank(s) with correct word
Water flows through a pipe. The diameter of the pipe at point B is larger than at point A. Where is the water pressure greatest?
A) at point A B) at point B C) It is the same at both A and B.