Monochromatic light from a He-Ne laser (? = 632.8 nm) is incident on a diffraction grating containing 5000 lines/cm. Determine the angle of the first-order maximum
a. 18.4°
b. 39.2°
c. 14.6°
d. 27.7°
e. 13.9°
a
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You are in a spaceship moving past Earth at nearly lightspeed and you observe Mort, who is on Earth. You measure his mass, pulse rate, and size. How are they different from the values measured by Mort himself?
A) Mass has decreased, pulse rate has speeded up, and size is reduced along the direction of motion. B) Mass has increased, pulse rate has speeded up, and size is reduced along the direction of motion. C) Mass has increased, pulse rate has slowed down, and size is reduced along the direction of motion. D) They are unchanged, i.e., they are normal. E) Mass has decreased, pulse rate has slowed down, and size is reduced along the direction of motion.
What type of faulting results from stresses parallel to the fault plane?
a. Reverse b. Normal c. Abnormal d. Strike-slip
At t = 0, a particle is located at x = 25 m and has a velocity of 15 m/s in the positive x direction. The acceleration of the particle varies with time as shown in the diagram. What is the velocity of the particle at t = 5.0 s?
?
?
a.
+15 m/s
b.
?15 m/s
c.
+30 m/s
d.
0
e.
?1.2 m/s
A battery is responsible for supplying a constant current to a circuit
Indicate whether the statement is true or false