The height of the table is 75 cm, the height of the chair is 45 cm. What is the potential energy of a 200 gram mass book against the floor when a book is placed on a table?

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth’s center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

True or false graphs must include scales that increase by the same amount

Would it be correct to say the doppler effect is the apparent change in the speed of a wave due to the motion of the source? be sure to fully explain your position using at least 3 complete content related sentences.