Which of the items below is electromagnetic radiation?
a. gamma rays
b. X-rays
c. visible light
d. radio
e. All of the other choices are correct.
e
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Velma passes Mort at a high speed. Each holds a meter stick, oriented parallel to the direction of relative motion. Mort observes that
A) his meter stick is 1 m long, and Velma's meter stick is longer than 1 m. B) his meter stick and Velma's meter stick are both shorter than 1 m. C) his meter stick is longer than 1 m, and Velma's meter stick is 1 m long. D) his meter stick and Velma's meter stick are both 1 m long. E) his meter stick is 1 m long, and Velma's meter stick is less than 1 m long.
A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up-and-down motion.The displacement vector from the equilibrium position has its largest magnitude
a. True b. False Indicate whether the statement is true or false
1-Fluoropentane and 5-fluoropentane are
a. isomers. b. neither isomers nor the same compound. c. the same compound.
Geologists think that Earth is how old?
a. 4560 billion years b. 45.6 thousand years c. 45.6 million years d. 4.56 billion years