What capacitance will have the same reactance as a 100-mH inductance of both of them are in a 120-V 60-Hz circuit?
What will be an ideal response?
70 µF
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Equilibrium: A 15-kg child is sitting on a playground teeter-totter, 1.5 m from the pivot. What is the minimum distance, on the other side of the pivot, such that a 220-N force will make the child lift off the ground?
A. 1.0 m B. 1.5 m C. 0.10 m D. 9.8 m E. 2.4 m
Thin Lenses: An object is placed 21 cm from a concave lens having a focal length of magnitude 25 cm. What is the magnification?
A. -0.54 B. 0.54 C. -0.32 D. -0.22 E. 0.22
If Jupiter were the size of a basketball, Earth would be the size a(n)
a. bacterium. b. grain of rice. c. marble. d. orange. e. grapefruit.
Suppose reaction A involves the breaking of bonds and 75 J of energy, reaction B involves the breaking of bonds and 40 J of energy, and reaction C involves the making of bonds and 125 J of energy
What is the overall A + B + C reaction energy? Is this an exothermic or an endothermic reaction? Explain.