A 12.5-kg glider is observed flying at an altitude of 1,510 m at a constant velocity of +18.0 m/s. What is the total mechanical energy of the glider ​

The illuminance of a surface varies inversely with the square of its distance from the light source. if the illuminance of a surface is 120 lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30 lumens per square meter?

What electron configurations do atoms usually achieve by sharing electrons to form covalent bonds?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge