Physics, 05.10.2019 23:30 chavezdavis25
Astudent measured the density of gold to be 20.4 g/cm3. the accepted value of the density of gold is 19.3 g/cm3. what is the percent error of the student's measurement?
a. 6.09%
b. 0.70%
c. 5.70%
d. 1.35%
Answers: 2
Physics, 21.06.2019 20:00
The chemical effect of the endocrine system is longer lasting than the chemical effect of the nervous system. select the best answer from the choices provided t f
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Physics, 21.06.2019 20:30
Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.
Answers: 2
Physics, 22.06.2019 10:00
(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present
Answers: 3
Astudent measured the density of gold to be 20.4 g/cm3. the accepted value of the density of gold is...
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