Calculate the average radius for Mercury's orbit. This can be done by averaging all the
radius vectors or more simply, by averaging
the longest and shortest radit that occur
along the major axis. The major axis is
shown in Figure 2. Recall that the sun is at
one focus; the other focus is located at a
point that is the same distance from the
center of the ellipse as the sun, but in the
opposite direction.

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? round your answer to the nearest tenth. s how far will the football travel before it lands? round your answer to the nearest tenth. m

2. which of the following devices is associated with the reception of radio signals? o a. demodulator o b. transmitting antenna o c. oscillator o d. microphone