Earthquake waves are classified as P waves and S waves. Which of the following statements is true about these waves?
a. The P wave is transverse as is the S wave. b. The P wave is longitudinal as is the S wave. c. The P wave is transverse and the S wave is longitudinal.
d. The P wave is longitudinal and the S wave is transverse. e. Both the P and S waves are mixtures of longitudinal and transverse waves.
D
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Why does our theory predict that neutron stars will have strong magnetic fields?
What will be an ideal response?
Nuclear power reactors cause less atmospheric pollution that fossil fuel power plants and produce no greenhouse gasses
A. true B. false
What does the spring constant k measure?
a. Period. b. Frequency. c. How much force it takes the string to stretch a given distance. d. How far the spring can be stretched before the stretch permanently deforms the spring. e. Amplitude.
Suppose an elliptical galaxy is so far away that we cannot see even its brightest stars individually. Which of the following techniques might allow us to measure its distance?
A) We could use parallax. B) We could use Cepheid variables as standard candles. C) We could use a white dwarf supernova as a standard candle. D) We could use radar ranging.