7
a student pushes a book with a force of 5 n to the east. which statement
describes the r...
Physics, 21.11.2019 03:31 recon12759
7
a student pushes a book with a force of 5 n to the east. which statement
describes the reaction force?
Answers: 1
Physics, 21.06.2019 23:30
In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door
Answers: 2
Physics, 22.06.2019 13:10
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 Ć 1013 rad/s. the mass of a nickel atom is 9.75 Ć 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 Ć 10-34 j ā¢ s, , 1 ev = 1.60 Ć 10-19 j)
Answers: 2
Physics, 22.06.2019 13:30
6ā43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.
Answers: 2
Physics, 22.06.2019 15:00
Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14ĻĻµ0. d)the ball will oscillate along the z axis between z=d and z=ād in simple harmonic motion. what will be the angular frequency Ļ of these oscillations? use the approximation dāŖa to simplify your calculation; that is, assume that d2+a2āa2. express your answer in terms of given charges, dimensions, and constants
Answers: 2
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