Give two examples each for conduction, convection, and radiation.
Conduction - heating a tin can with the use of a bunsen burner, a cold iron skillet placed on a stovetop which is hot
Convection - boiling of water, hot air balloon
Radiation - UV from the sun, x-rays from an x-ray equipment
Find out whether combustion reactions are exothermic or endothermic, and explain why.
Combustion reactions are exothermic reactions since they always produce or release heat. The reactants would always have more energy than the products which causes the excess heat to be released.
<span>Find a substance that has a specific heat that is higher than liquid water and explain what it means.
The substance which has a higher heat capacity than water would be the hydrogen gas. It has a heat capacity of 13.83 kJ/kg K. Having a higher heat capacity would mean that it requires more heat energy in order to increase the temperature as compared to water.
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The answer that is not caused by a gravitational pull is two atoms come together to form a molecule because atoms form molecules because of the electrons, and not gravitational pull.
Therefore the correct answer would be,
Two atoms come together to form a molecule.
I hope that this has satisfied you.
Answer:
A the first string has a higher pitch then the second string
Explanation:
I think it's important for the crabs to be preserved because many other species rely on them for food already. It's bad enough birds, and other animals munch on them but humans are making it worse. An environmental condition affecting the population of these crabs are roads, and houses, they block crabs from going to beach.
