Radio waves are a part of the electromagnetic spectrum with high waves links and low frequencies.

Biology

2 answers:

Kay [80]2 years ago

7 0

Answer: True, radio waves are part of the electromagnetic spectrum with high wave links and low frequencies. I attached a picture of the electromagnetic spectrum for your reference.

Hope this helps ya :D

earnstyle [38]2 years ago

4 0

The answer is:

A. true

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Bill has a perfect cube of an unknown substance. The density of the substance is 3.0 g/cm. He

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The volume of the cube of unknown substance is $27\ cm^3$ . The length of one side of the cube is 9 cm

Explanation:

As per the formula of mass and density, Mass / Density equals to volume. Therefore as the mass of the cube was given to be 81 g and the density of the cube is known to be 3.0 g/ $\mathrm{cm}^{3}$ ,, to help Bill find out the volume. It is the ratio of mass and density and can be calculated as

$\text {volume}=\frac{\text {mass}}{\text {density}}=\frac{81 g}{3 g / \mathrm{cm}^{3}}=27 \mathrm{cm}^{3}$

As it is a cube, the volume is product of length, breadth, and height. Here, all sides are same as it is the cube.

$volume= length \times breadth \times height$

$27=3 l$

$length of cube's one side, l=\frac{27}{3}=9 \mathrm{cm}$

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Answer: asked the patient two questions about feelings of hopelessness and feelings related to the enjoyment of activities

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Hopelessness is an emotional context featured by a lack of hope, passion, and optism. It is expressed as a symptom of varying behavioral and mental health problems, including depression, bipolar, anxiety, eating disorders and among others.

In the other hand, the test on feelings related to enjoyment was done to evaluate the the emotions of pleasure from the individual’s engagements.

However, the physician carried out the two tests on his patient to know whether he's depressed or not.

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The enzyme β-galactosidase catalyzes what reaction?

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For breaking down lactose

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