Physics, 06.11.2021 08:40, lanettejohnson355
Two spheres, labeled A and B, have identical masses, but are made of different substances. The specific heat capacity of sphere A is 440 J/(kg · C°) and that of sphere B is 160 J/(kg · C°). The spheres are initially at 21 °C; and the same quantity of heat is added to each sphere. If the final temperature of sphere A is 72 °C, what is the final temperature of sphere B?
Answers: 2
Physics, 22.06.2019 03:30, sere50
The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.
Answers: 3
Physics, 22.06.2019 03:50, cyberdac01
Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.
Answers: 1
Physics, 22.06.2019 08:30, ahmedeldyame
Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?
Answers: 3
Two spheres, labeled A and B, have identical masses, but are made of different substances. The speci...
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