Figure 10 is a graph of intensity against wavelength for the electromagnetic radiation emitted by a halogen lamp. Describe how the intensity of the radiation varies with wavelength in Figure 10.

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Asmall 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 10^3 n/c. if the ball is in equilibrium when the string makes a 30 ° angle with the vertical, what is the net charge on the ball?