Coal, gas, and oil are ______________ fuels
Fill in the blank(s) with correct word
fossil
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Why doesn't Venus have seasons?
A) It does not have an ozone layer. B) It is too close to the Sun. C) Its rotation axis is nearly perpendicular to its orbital plane. D) It does not rotate fast enough.
In a system of N gas molecules, the individual speeds are v1, v2, ..., vN . The rms speed of these molecules is:
A. 1 N ?v1 + v2 + ... + vN B. 1 N v2 1 + v2 2 + ... + v2 N C. (v2 1 + v2 2 + ... + v2 N )/N D. [(v1 + v2 + ... + vN )/N] 2 E. 0(v1 + v2 + ... + vN )2/N
A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.If two slide projectors are connected in series across the same 120-volt source, the current drawn from the source remains at 6 amperes
a. True b. False Indicate whether the statement is true or false
A camera has a lens that has an adjustable film distance used for focusing purposes. When the object being photographed is at a very large distance, the distance from the lens to the film is 50.0 mm. What would be the lens-to-film distance for an in-focus object 2.00 m from the camera?
a. 66.7 mm c. 51.3 mm b. 40.0 mm d. 48.8 mm