What process in an isolated atom will make it absorb a photon?
What will be an ideal response?
An electron will move from one energy level to another if enough energy is added to the electron. An electron in a low energy level can absorb the energy of a photon and move to a higher energy level.
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A 2.00-kg mass is placed at (3.00, 4.00) m, and a 3.50-kg mass is placed at (3.00, ?4.00) m. What is the moment of inertia of this system of masses about the z axis?
a. 138 kg·m2 b. 16.5 kg·m2 c. 88.0 kg·m2 d. 49.5 kg·m2 e. 22.0 kg·m2
A magnifying glass has a convex lens of focal length 15 cm. At what distance from a postage stamp should you hold this lens to get a magnification of +2.0?
Which of the following statements is true regarding shock waves?
A) They are predominantly transverse in nature. B) They can be produced by the birth of very hot stars. C) They are also called shear waves. D) They cannot be produced by supernova explosions.
The mass of Jupiter can be calculated by
A) measuring the orbital period and distance of Jupiter's orbit around the Sun. B) measuring the orbital period and distance of one of Jupiter's moons. C) measuring the orbital speed of one of Jupiter's moons. D) knowing the Sun's mass and measuring how Jupiter's speed changes during its elliptical orbit around the Sun. E) knowing the Sun's mass and measuring the average distance of Jupiter from the Sun.