a burning candle is placed 20cm in front of a concave mirror of focal length 10cm find the nature and position of the image formed​

How is the gravitational force related to the distance between two objects?

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.