Explain how a convection current can enable a hawk or eagle to soar upward without flapping its wings

1 answer:

4 0

Convection is defined as the movement of air based on the differing temperatures of the air layers. The movement of this air causes an updraft at some point, since warmer air rises while cooler air sinks. This air also travels along the sky, whether its by a jet stream or just wind or some other form of air movement. This would provide the eagle or hawk to soar without flapping, since the air from underneath supports it up.

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Sugars are polar substances. Which action would make sugar more soluble in water?

Helen [10]

Answer the correct answer for the question is option a Increase in temperature of water.

Explanation- When the temperature of water is increased the energy of water is increased at molecular level, this increased energy causes vibration between the hot water molecules bit faster than in normal water which also allows the sugar molecules to vibrate and associate with water at molecular level as it gets more space between the molecules.

Hence this action would make sugar more soluble in water.

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4 years ago

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3 years ago

Americium-241 is an alpha emitter used in household smoke detectors and K-40 is a positron emitter used to date rock samples. Th

VMariaS [17]

Answer:

Np-237, Ar-40.

Explanation:

Alpha particle is positively charged particle having a mass of 4 unit. Hence,when alpha is removed from any isotope it produces a element having mass 4 units less than original isotope that was before emission. Americium 241 isotopes used in the smoke detector which emit an alpha particle to produce neptunium-237.

Potassium-40 emits positron which is having negative charge to lower one proton and increase one neutron number in the particle and in such way it will produce $^{40}Ar_{18}$ not $^{40}Ca_{20}$