Adung beetle's image located parallel to the central axis of a spherical mirror is exactly 15 cm. if the focal length of the spherical mirror is 25 cm
i) calculate the distance (in cm ) of the beetle from the spherical mirror.
ii) does the dung beetle's height appear to be longer or shorter than that of the image?
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what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.