Answer:
Cedar, mahogany, red wood or something else is fine, but the only downside is that it will cost you more. However, a project that is partially or fully exposed to the elements, something more than normal lumber is a must. The most cost effective method is to use pressure treated lumber.
Explanation:
Answer:
1. Answer: The bowling ball has more potential energy as it sits on top of the building. It does not have any kinetic energy because it is not moving.
2. Answer: The bowling ball has equal amounts of potential and kinetic energy half way through the fall. At the half way point, half of the potential energy has been converted to kinetic energy.
3. Answer: Just before the ball hits the ground, it has more kinetic energy. As it hits the ground the potential energy becomes zero.
4. Answer:
PE=784 J
5. Answer:
PE = 392 J
6. Answer:
KE= 392 J
Also, since the PE and KE are equal at the half way point and PE =392 J, KE = 392 J.
7. What is the kinetic energy of the ball just before it hits the ground?
Answer:
KE=784 J
At first I answered in the comments, but I am able to answer now. I hope this can help
<span>You can separate mixtures that have magnetic components. The reason is because you can use magnetism to separate out the magnetic components.</span>
