In an earlier physics course you learned about waves (sound waves, waves on the strings of musical instruments, etc.). Describe the main difference between longitudinal waves and transverse waves.(2 pts)Based on what you have learned in the lecture part of the course, which of these two types is an electromagnetic wave(2 pts)
Answers: 2
Physics, 22.06.2019 12:00
Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter
Answers: 1
Physics, 22.06.2019 12:20
Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earthβs electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earthβs electric field a feasible means of flight? why or why not?
Answers: 2
Physics, 22.06.2019 13:40
Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.
Answers: 2
Physics, 22.06.2019 14:00
Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
Answers: 1
In an earlier physics course you learned about waves (sound waves, waves on the strings of musical i...
Mathematics, 29.08.2019 12:50
Mathematics, 29.08.2019 12:50
History, 29.08.2019 12:50
Biology, 29.08.2019 12:50
Social Studies, 29.08.2019 12:50
Mathematics, 29.08.2019 12:50
History, 29.08.2019 12:50
History, 29.08.2019 12:50
Arts, 29.08.2019 12:50
Mathematics, 29.08.2019 12:50