An x-ray photon of energy
J has what wavelength?
A. 200 nm
B. 62.1 pm
C. 32.7 nm
D. 5.73 pm
E. 1.07 nm
B. 62.1 pm
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A 4.0-kg cylinder of solid iron is supported by a string while submerged in water. What is the tension in the string? The density of iron is 7860 kg/m3 and that of water is 1000 kg/m3
A) 24 N B) 40 N C) 20 N D) 2.5 N E) 34 N
Most of Earth's seismic activity, volcanism, and mountain building occur along
A) convergent boundaries. B) divergent boundaries. C) plate boundaries. D) transform fault boundaries.
You discover that a nearby star, very similar to the Sun, has a velocity curve that has a period of 6 months, induced by the orbit of a planet. You infer that
A) the planet's orbit radius is greater than 1 AU. B) the planet's orbit radius is less than 1 AU. C) the planet's orbit radius cannot be determined based on the information provided. D) the planet's orbit radius is about 1 AU.
Identical masses m are attached to identical springs of spring constant k suspended from the ceiling. With both masses hanging in their equilibrium positions, mass A is pulled down 10 cm and released while mass B is pushed up 10 cm and released. Which statement is correct?
a. Mass A will travel a smaller distance to its highest point than mass B will travel to its lowest point. b. Mass A will travel a greater distance to its highest point than mass B will travel to its lowest point. c. Masses A and B will travel equal distances between their highest and lowest points. d. More work was done on mass A by the extending force than on mass B by the compressing force. e. The total work done on mass A by the extending force was equal to the total work done on mass B by the compressing force.