If the two slits in a two-slit apparatus kept the same width, but the distance between the two slits is increased, the number of interference fringes within the diffraction maximum will:
A. decrease
B. increase
C. may do any of the above.
D. remain the same
B. increase
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Toss a baseball bat into the air and it wobbles about its
A) geometrical center. B) center of mass. C) heavier end.
In Fizeau's experiment to measure the speed of light, the wheel has 475 notches and rotates with a speed of 55.0 rev/sec. Light passing through one notch travels to the mirror and back just in time to pass through the next notch
If the distance between the wheel and the mirror is 8800 m, how much time does it take the wheel to rotate from one notch to the next? A) 11.9 s B) 24.8 s C) 3.83 × 10-5 s D) 7.44 × 10-5 s E) 8.44 × 10-5 s
When mass is accreted into a black hole, what fraction of the total mass-energy can be radiated away?
A) 0.007% B) 0.08% C) 1.4% D) 20% E) 50%
Two identical tiny balls of highly compressed matter are 1.50 m apart. When released in an orbiting space station, they accelerate toward each other at 2.00 cm/s2. What is the mass of each of them? (G = 6.67 × 10-11 N ? m2/kg2 )
What will be an ideal response?