Physics, 09.02.2021 04:50 genyjoannerubiera
A 22.4 g silver ring (cp = 234 J/kg·°C) is heated to a temperature of 77.4°C and then placed in a calorimeter containing 4.08 ✕ 10-2 kg of water at 24.0°C. The calorimeter is not perfectly insulated, however, and 0.132 J of energy is transferred to the surroundings before a final temperature is reached. What is the final temperature?
Answers: 3
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The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage
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Physics, 21.06.2019 23:30
Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?
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The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)
Answers: 2
A 22.4 g silver ring (cp = 234 J/kg·°C) is heated to a temperature of 77.4°C and then placed in a ca...
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