The type of mirror that will allow you to see large areas normally hidden from your view is
a. concave.
b. convex.
c. plane.
d. half-silvered.
e. Polaroid.
b
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In a compound microscope the final image is formed by the objective
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The air inside a bicycle tire pump has 60 joules of work done on it as 20 joules of heat is conducted away from it. What is the change in internal energy of the air?
Tuning forks #1, #2, and #3 each have slightly different frequencies.When #1 and #2 are sounded together, a beat frequency of 3 Hz results. When #2 and #3 are sounded together, a beat frequency of 5 Hz results. If the frequency of #1 is 100 Hz, which of the following cannot be the frequency of #3?
a. 92 Hz b. 95 Hz c. 98 Hz d. 102 Hz e. 108 Hz
If two heaters are connected in parallel across the 120 volt source, the total power drawn from the source increases to 2400 watts
Indicate whether the statement is true or false