A positive charge of 3.0mu * C is pulled on by two negative charges. As shown in Figure 16, one negative charge - 2.0mu * C , is 0.050 m to the west, and the other, -4.0 mu C. , is 0.030 m to the cast. What net force is exerted on the positive charge ?

Explain why the aperture of the spherical mirror should be small compared to the radius of curvature of the mirror.

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !