3 years ago

2. Jessie studies seaweed and she usually takes large amounts of samples. She would take

Physics

1 answer:

Leni [432]3 years ago

7 0

Answer:

Explanation:

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A rubber balloon is rubbed with a PVC pipe and the rubber balloon becomes positively charged. Why is this? a) Because the rubber

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Electrons are lost or gained when the ballon is rubbed with a PVC. As the rubber ballon lost electrons, it will have more protons, hence the positive charge. (More protons than electrons in the ballon).

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Finish the sentence below with the word that makes the sentence true.

Keith_Richards [23]

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Animals must eat other plants or animals to obtain the <u>energy</u> stored in the food

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One classification of living organisms, according to the way they obtain energy, is that of autotrophs and heterotrophs. The first group is represented by plants, which process their own nutrients from inorganic matter.

<u>Animals -heterotrophes- are unable to process their own nutrients</u>, so they must obtain them from other organisms, either plants or animals. External food sources provide them with nutrients, which contain the energy substrate needed to perform their vital functions.

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The coordinates of a bird flying in the xy-plane are given by x(t)=αt and y(t)=3.0m−βt2, where α=2.4m/s and β=1.2m/s2.part a:Cal

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Α $=2.4 \frac{m}{s}$

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$vectorV=[$ α $;-2$ β $t]$

$ax(t)=0$

$ay(t)=-2$ β $t$

$vector a [0;-2$ β $t]$

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What do light waves NOT do when intereacting with matter

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D. Dissolve

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A light wave is not a soluble substance, so it cannot dissolve. But it can totally do A, B, and C.

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