A rod with a diameter of 3.00 mm, projects 2.0 cm horizontally outward from a wall. A 50.0 N weight is hung from the end of the rod and the rod deflects downward by
The shear strain of the rod is
A.
B.
C.
D.
E.
A.
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Examples of astronomical objects that can be considered standard candles (or bulbs) are....
A. type Ia supernova B. 21-cm radiation C. planetary nebulae D. Cepheid variable stars
In Fizeau's experiment to measure the speed of light, the wheel has 475 notches and rotates with a speed of 40.0 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 7890 m, what is the speed of light measured by this experiment? A) 3.00 × 108 m/s B) 3.00 × 10-8 m/s C) 3.22 × 108 m/s D) 3.22 × 10-8 m/s E) 2.25 × 108 m/s
A series LCR AC circuit is at resonance. It contains a resistor of 16 W, a capacitor of 0.35 mF, and an inductor of 90 mH. If an effective (rms) voltage of 150 V is applied, what is the effective (rms) current when the circuit is in resonance?
a. 9.4 A c. 5.0 A b. 3.3 A d. 16.1 A
The particles of interplanetary dust are called ______________
a. micrometeoroids b. asteroids c. meteors d. meteorites