An x-ray photon of energyJ 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

Physics & Space Science

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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.

Physics & Space Science

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

Physics & Space Science

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.

Physics & Space Science

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.

Physics & Space Science