Spherical Mirrors: When an object is 12 cm in front of a concave spherical mirror, the image is formed 3.0 cm in front of the mirror. What is the focal length of the mirror?
A. 15 cm
B. 4.0 cm
C. 2.4 cm
D. 1.3 cm
Answer: C
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Form when hot air near the surface rises quickly through a small pocket of cooler, low-pressure air above it
A. Waterspout |
B. Tropical Cyclones |
C. Tornado |
D. Lightning |
E. Great Red Spot |
F. Dust Devil |
The atmospheric pressure at the surface of the terrestrial planets increases as their distance from the Sun increases.
Answer the following statement true (T) or false (F)
The advantage that a lever can give you is that
A. with a small lever, you can move a large weight. B. with a large force, you can torque a large weight. C. with a small force, you can move a large weight. D. with a small torque, you can lift a large weight.
What is the magnitude of the angle of dip at Earth's magnetic north pole?