According to the first law of thermodynamics, for any process that may occur within an isolated system, which of the following choices applies?
a. entropy remains constant
b. entropy increases
c. entropy decreases
d. None of the above choices apply.
d
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Vision Problems: Alice is farsighted and cannot see objects clearly that are closer to her eye than 80.0 cm. What is the refractive power of the contact lenses that will enable her to comfortably see objects at a distance of 25.0 cm from her eyes?
A. +2.75 diopters B. -2.75 diopters C. -4.72 diopters D. +4.72 diopters E. +7.00 diopters
Capacitors in series share the same charge and capacitors in parallel share the same voltage
Indicate whether the statement is true or false
What aspect of the Sun's behavior wraps and distorts the solar magnetic field?
A) the differential spin between the equatorial and polar regions B) sunspot activity due to differential heat dispersion C) plasma fluxes within the core D) the cycle of the reversal of the magnetic poles
A tuning fork is sounded above an adjustable length resonating tube (one end closed), which resonates at a length of 0.250 m and again at 0.750 m. What is the frequency of the fork when the speed of sound is taken to be 340 m/s?
a. 340 Hz c. 1020 Hz b. 680 Hz d. 170 Hz