How does mass effect potential and kinetic energy on a roller coaster?

Ghee freezes from the bottom when cooled it but the water freezes from the top. state the reason.

A magnet and a loop of wire that is connected to an galvanometer are in relative motion. Will a current be produced?

There are four springs stretched by the same mass. Spring A: 25 cm Spring B: 10 cm Spring C: 100 cm Spring D: 1 cm Which spring is the strongest? A B C D

Why is water And effective solvent for many different types of compounds? A. it contains hydrogen bonds B. it contains polar covalent bonds. C. it has a high specific heat D. it expands when freezing

This system filters wastes from the blood

Which of the following statements about how sound waves travel is correct? A Sound waves travel faster through solids than through liquids. B Sound waves travel faster through gases than through solids.

The idea that life could spring from nonliving matter is called? a. development. b. homostasis. c. spontaneous generation. d. evolution. 20 PTS

Physics how to calculate disintegration energy

Fast flowing water wears down the surface of a rock. This is an example of mechanical weathering chemical weathering erosion molecular weathering

What current would it need to carry in order to experience a very modest 1.0*10-3n⋅m torque?