Answer:
In the beginning, a roller coaster is still which means the forces acting upon the roller coaster are equal. But then as the rollar coaster starts to move upwards, the potential energy changes into kinetic energy since it is in motion. When the roller coaster reaches the top and stops, its kinetic energy immeadiately transforms into potential energy because it has potential to move and go fast. As the roller coaster descends, the potential energy transforms into kinetic energy. Hope this helps!
Explanation:
I think the answer is A B C I’m not completely sure though
Absorbing light and through collisions
<u>Answer</u>:
If beaker tongs are not available, we could use crucible tongs to handle the hot beaker
<u>Explanation</u>:
Crucible tongs is tool shaped like a scissor where instead of two blades, two pincers or pieces of metals that concave together is used. They help us to hold or grasp a hot beakers, flasks or even small beakers. It is difficult for the people to catch or hold the hot beakers directly. So crucible tongs plays a vital role when burning, or using hot objects in the chemical laboratory.Crucible tongs are generally made with strong metal such as nickel, stainless or oxidized steel so as to withstand very high and extreme temperatures.