What is the focal length of concave mirror that magnifies , by a factor of +3.2 , an object that is placed 30cm from the mirror

muscle endurance

explanation:

i can do 50 in a row ( but i get so tired after that)

c.the charges if the proton and electron and gravity

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.