Answer:
negative
the chage on hydroxide ions os negative
A. reduce the need to use fossil fuels
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
Answer:
This is a desert because there is little precipitation for plant and animal life to thrive.
Explanation:
Tundra is harsh environment because of its cold temperature, so it's definitely not too hot. Swamp temperature should be not too cold or hot. The rainforest should have abundant plant and animal life.
Desert has very low precipitation and low moisture so that not much water can be found around. Water is vital for any plant or animal. Water also helps regulate temperature and make the fluctuation in the environment extreme. The temperature around the desert can be really high at daylight and low at night.
Sand and water can be separated by any of the following methods:
1. Sedimentation and decantation: This method involves the mixture being kept undisturbed for some time. After some time, sand being heavier and insoluble in water, settles down at the bottom of container. Now, water is poured into another container to separate it from sand.
2. Filtration: This method involves the mixture being passed through a filter paper (a filter with very fine pores). Sand particles being larger in size are retained by the filter paper and get separated from water.
I hope this helps! :D
