Two light bulbs are connected to a wall outlet as shown below. Bulb #1 is 100 W and Bulb #2 is 40 W. Which statement is true?
3
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A 3rd magnitude star is 3 times brighter than a 1st magnitude star
Indicate whether the statement is true or false
AC Generator: You are designing an ac generator with a maximum emf of 8.0 V. If the generator coil has 200 turns, each with a cross-sectional area of 0.030 m2, what should be the frequency of the generator in a magnetic field of 0.030 T?
A. 7.1 Hz B. 7.5 Hz C. 8.0 Hz D. 44 Hz
Two parallel wires are separated by 0.25 m. Wire A carries 5.0 A and Wire B carries 10 A, both currents in the same direction. The force on 0.80 m of Wire A is:
a. half that on 0.80 m of wire B. b. one-fourth that on 0.80 m of wire B. c. toward Wire B. d. away from Wire B.
Shock waves and a sonic boom occur when an object moves faster than the speed of sound
Indicate whether the statement is true or false