Question 22 (1 point) Charges +Q and -Q are located on the x-axis. Points 1, 2,...

  

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Question 22 (1 point) Charges +Q and -Q are located on the x-axis. Points 1, 2, and 3 are identified on the x-axis in the picture. The directions of the electric field at points 1, 2, and 3, respectively, are: + 1 +Q O none of the above (1) left, (2) left. (3) left (1) left. (2) right, (3) right (1) right. (2) left, (3) right (1) left. (2) right, (3) left 2 -Q S + Question 23 (1 point) ✔ Saved Pianos make their beautiful sound using strings under different tensions. A particular piano wire has a length 81 cm and a mass of 2.0 g. What tension must it be stretched with to produce a fundamental frequency of 394 Hz? Question 24 (1 point) Saved Two identical tuning forks like we had in our speed of sound laboratory have frequencies of 256 Hz. One fork is then loaded up with a drop of wax so it vibrates differently. After that, when they are struck together 5 beats/s are heard. The frequency of the loaded fork is 261 Hz 31 256 Hz 251 Hz 266 Hz 246 Hz Question 25 (1 point) ✔Saved An ideal spring of force constant k = 2.2 x 10^2 N/m oscillates a block of mass m= 0.22 kg. If the system has an energy of 6.6 J, then the amplitude of oscillation A must be: 0.18 m S Question 22 (1 point) Charges +Q and -Q are located on the x-axis. Points 1, 2, and 3 are identified on the x-axis in the picture. The directions of the electric field at points 1, 2, and 3, respectively, are: + 1 +Q O none of the above (1) left, (2) left. (3) left (1) left. (2) right, (3) right (1) right. (2) left, (3) right (1) left. (2) right, (3) left 2 -Q S + Question 23 (1 point) ✔ Saved Pianos make their beautiful sound using strings under different tensions. A particular piano wire has a length 81 cm and a mass of 2.0 g. What tension must it be stretched with to produce a fundamental frequency of 394 Hz? Question 24 (1 point) Saved Two identical tuning forks like we had in our speed of sound laboratory have frequencies of 256 Hz. One fork is then loaded up with a drop of wax so it vibrates differently. After that, when they are struck together 5 beats/s are heard. The frequency of the loaded fork is 261 Hz 31 256 Hz 251 Hz 266 Hz 246 Hz Question 25 (1 point) ✔Saved An ideal spring of force constant k = 2.2 x 10^2 N/m oscillates a block of mass m= 0.22 kg. If the system has an energy of 6.6 J, then the amplitude of oscillation A must be: 0.18 m S

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For a positive charge the electric field lines are outw... View the full answer