It takes time 8min 20 seconds for light to reach from sun to the earth surface. If speed of light is taken to be 3x10 km/s. Find the distance of the sun from the earth in SI system.
Ans: 1.5x1011

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.

Aracecar driver has to hold on tightly when going around a banked curve. approximately what is the centripetal force on a 2220.0 kg car going around a circle with a diameter of 190.0 meters at 25.0 m/s?

What does si stand for,when referring to a system of measurement