At the top of its highest hill, a rollercoaster's speed is 10 m/s, 3 seconds later it reaches a speed of 32m/s
Just before it gets to the bottom. What was the
Acceleration ?

25pts the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Which of these metals are magnetic?

Convection occurs when thermal energy is transferred by the movement of