HELP ME PLEASEEE ILL GIVE BRAINLIES Two charged balls are 10 cm apart. One is positively charged, and the other is negatively charged.

• Describe the electric field lines and any forces that would exist between the two balls.
• Explain how the electric field and/or force would change if both balls had positive charge.

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.