Aspace probe is orbiting a planet on a circular orbit of radius r and a speed v. the acceleration of the probe is a. suppose rockets on the probe are fired causing the probe to move to another circular orbit of radius 0.5r and speed 2v. what is the magnitude of the probe’s acceleration in the new orbit?

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=