A stone is thrown upwards from the edge of a cliff with a speed of 5.0 ms. It hits the ground 2.0 s later. What is the height of the cliff?

What do elements in a family tend to share. a.) similar periods b.) similar groups c.) similar atomic symbols d.) similar chemical properties and characteristics

The force it would take to accelerate an 900-kg car at the rate of 6m/s2

Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.