Physics, 27.02.2020 19:11 emmahall0826
The thermal conductivity of a cement is 0.168 British thermal units per foot hour degree Fahrenheit [BTU divided by (ft h Superscript o Baseline Upper F )]. Convert this value in units of watts per meter kelvin [Upper W divided by (m Upper K )].
Answers: 2
Physics, 22.06.2019 03:00
1. a net force of 100 newtonâs is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of
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Physics, 22.06.2019 13:10
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 à 1013 rad/s. the mass of a nickel atom is 9.75 à 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 à 10-34 j ⢠s, , 1 ev = 1.60 à 10-19 j)
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Physics, 22.06.2019 15:30
Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.
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Physics, 22.06.2019 21:40
Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.
Answers: 1
The thermal conductivity of a cement is 0.168 British thermal units per foot hour degree Fahrenheit...
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