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Eddi Din [679]
3 years ago
8

 Why are radio waves safer to humans than X- Rays

Physics
1 answer:
julsineya [31]3 years ago
3 0

Answer:

Explanation:

Since X-rays are high (energy) frequency photons and radio waves are composed of low (energy) frequency photons, X-rays are more energetic and can do more harm to organic materials (such as cells).

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If a runner has a speed of 8.66m/s and runs for 46.2s what distance is covered? tv = d
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\text{Using the formula: }v=\frac{d}{t}\\\therefore vt=d\\\text{Plug and chug:}46.2(8.66)=400.092\text{ metres}

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The natural pH of rain water is?
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5.6 which would be acidic!
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Provide two ways that objects can become charged
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friction, conduction and induction

Explanation:

Had it in class I had it correct hope this helps.

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3 years ago
Star Twinkle but planet do not why​
V125BC [204]

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7 0
3 years ago
An automobile with a mass of 1240.00 kg has 3.99 m between
Vitek1552 [10]

Answer:

948.15248\ N

5134.04751\ N

Explanation:

F_f = Force on front wheels

F_r = Force on rear wheels

Distance between CG and rear wheel = 3.99-0.622 = 3.368 m

F_r=1240\times 9.81-F_f

As the forces are conserved we have

(1240\times 9.81-F_f)3.368=F_f\times 0.622\\\Rightarrow 12164.4-F_f=\dfrac{0.622F_f}{3.368}\\\Rightarrow 12164.4-F_f=0.18467F_f\\\Rightarrow F_f=\dfrac{12164.4}{1.18467}\\\Rightarrow F_f=10268.09503\ N

On rear wheels

F_r=1240\times 9.81-10268.09503\\\Rightarrow F_r=1896.30497\ N

The force on each rear whees is \dfrac{1896.30497}{2}=948.15248\ N

Force on each front wheel is \dfrac{10268.09503}{2}=5134.04751\ N

8 0
3 years ago
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