The allotrope of carbon that is used in lubricants, sporting goods, and aircraft is graphite. The answer is letter A. Graphite is a good conductor of heat and is very soft. The layers of lattice of each are bound to the adjacent layers by weak Van der Waals forces which allow the layers to slide over one another easily.
Answer: Protons
Explanation: When determining an element identity the most important Subatomic part to look at is the number of protons in the nucleus determines the identity of an atom .
Gases, fluids, and other solids in contact with a moving object will produce heat flow due to friction. This is called heat transfer where heat energy is transferred from the high to low.
The changes shown are physicalchanges because when ice melts, it turns from solid to liquid.
Physical changes are when a substance changes in how it looks or acts without turning into something else. These changes can usually be undone, which means the substance can be brought back to how it was before.
When ice melts, it turns from solid to liquid. The tiny particles in the ice move around, but the stuff that makes up water stays the same. The process can go backwards, because the water that is a liquid can be turned back into ice.
When water gets really hot, it turns into gas called steam. The water molecules get enough energy to separate from each other and become vapor. Once again, the stuff that makes up water stays the same, and when steam cools down, it turns back into liquid water.
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Answer:
Because physical change are reversible change. we can reverse into the orginal effect.
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The number 0.00069 in scientific notation is written as 6.9 × 10^-4.
To write the number 0.00069 in scientific notation, you need to consider scientific notation as a method of writing numbers as a product of a decimal number and a power of 10. By moving the decimal point four places to the right, 0.00069 becomes 6.9. The decimal point move four spaces to the right makes the power 10 to the negative 4, because the number becomes smaller. Therefore, 0.00069 can be written as 6.9 × 10-4 in scientific notation.
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B. The birthrate may rise.
C. The death rate must fall.
D. The birthrate must fall.
If a population grows larger than the carrying capacity of the environment, the most likely to happen is:
A. The death rate may rise.
When a population grows larger than the carrying capacity of the environment, the resources available to the population will be depleted. This can lead to a decrease in the availability of food, water, and shelter. As a result, the death rate may rise.
The birthratemay also rise, but this is less likely. If the resources are already depleted, there may not be enough food and water to support a larger population. In addition, the stress of living in a crowded and resource-depleted environment may lead to an increase in stress-related deaths.
The other options, B. The birthrate may rise, C. The death rate must fall, and D. The birthrate must fall, are incorrect. The birthrate may rise, but it is not guaranteed. The death rate may fall, but it is not necessary. The most likely outcome is that the death rate will rise.
This is a concept known as carrying capacity, which is the maximum population size that an environment can sustain indefinitely. When a population exceeds the carrying capacity, the population will eventually crash. This can happen through a number of mechanisms, including starvation, disease, and conflict.
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Copper and Iron are two metals that can lose different numbers when they react with another molecule.
Therefore, copper and Iron are two metals that can lose different numbers when they react with another molecule.
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