A pair of 1-ohm resistors connected in parallel has a combined resistance of
A) 1 ohm.
B) 2 ohms.
C) 1/2 ohm.
D) none of the above
Answer: C
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Which isotope of hydrogen is radioactive?
a. Protium b. Tritium c. Deuterium d. Hydronium
The density of an object is defined as:
a. the volume occupied by each unit of mass. b. the amount of mass for each unit of volume. c. the weight of each unit of volume. d. the amount of the substance that has unit volume and unit mass. e. the amount of the substance that contains as many particles as 12 grams of the carbon-12 isotope.
Every location on the celestial sphere is part of some
a. degree. b. tropic. c. constellation. d. sign.
A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and a frequency of 2.55 Hz
(a) What is the maximum speed of the needle? (b) What is the maximum acceleration of the needle? What will be an ideal response?