In the previous question about the person changing a lightbulb, which of the following is true of the physiological effect of the current through her body? It is NOT necessary to show work or reasoning for this problem.    Table 26.1 Physiological effects of currents passing through the body Physiological effect AC current (rms) (mA) DC current (mA) Threshold of sensation 1 3 Paralysis of respiratory muscles 15 60 Heart fibrillation, likely fatal >100 >500            

    An electron is moving at 7.9 x 105 m/s through a 24 μT magnetic field, as shown. What is the magnetic force on the electron? Show your work or explain your reasoning. 

  An electron moves along the trajectory from point i to point f in the figure. It is NOT necessary to show work or reasoning for this problem.  a. The electric potential energy as it moves from point i to point f. b. The electron’s speed at point f is its speed at point i.

In the previous problem, what type of transformer is it? It is NOT necessary to show work or reasoning for this problem. 

Simplify: -3433{“version”:”1.1″,”math”:”-3433″}

Refer back to the previous question about the concert loudspeaker. What is the corresponding sound intensity level at the location of the microphone? Show your work or explain your reasoning.

  Identical metal spheres are initially charged as shown. First, spheres P and Q are touched together and then separated. Then, spheres Q and R are touched together and then separated. Afterward the charge on sphere R is __________. It is NOT necessary to show work or reasoning for this problem.   

Both a plane mirror and a sheet of paper are flat and feel fairly smooth, yet you can see your reflection in a mirror but not in a sheet of paper. Select which statement or statements are TRUE. It is NOT necessary to show work or reasoning for this problem. 

Simplify: 1241z{“version”:”1.1″,”math”:”1241z”} Show your steps.

    A metal rod A and a metal sphere B, on insulating stands, touch each other as shown. They are originally neutral. First, a positively charged rod is brought near (but not touching) the far end of A. Then, while the charged rod is still close, A and B are separated. Finally, the charged rod is then withdrawn. At the end, the charge on the rod and sphere are _______________. It is NOT necessary to show work or reasoning for this problem.