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3 years ago

You are riding on a school bus and suddenly get thrown forward. What did the bus just do?

2 answers:

8 0

You are thrown the direction that the bus was originally going.

If the bus is going straight and it turns left your body will keep trying to go straight. This is the same if the bus turns to the left.

We know the answer is not A and D however because when turning you are not 'suddenly' thrown forward.

We know it cannot be that the bus was going backward and suddenly stopped because you would fly in the original direction of the bus which is backwards.

The answer is B because you are going forward, then suddenly stop, which means you are suddenly flung in the direction the bus was originally going which was forward.

Alexeev081 [22]3 years ago

3 0

B. The bus is going forward and suddenly stopped.

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When the chemical name of a compound is being written, the subscripts will determine the symbols. elements. prefixes. suffixes.W

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Answer:

C. Prefixes

Explanation:

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2 years ago

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There are Z protons in the nucleus of an atom, where Z is the atomic number of the element. An α particle carries a charge of +2

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Answer:

$r = 2.84 \times 10^{-14} m$

Explanation:

As per energy conservation we know that the electrostatic potential energy of the charge system is equal to the initial kinetic energy of the alpha particle

So here we can write it as

$\frac{1}{2}mv^2 = \frac{k(2e)(ze)}{r}$

now we know that

$m = 1.67 \times 10^{-27} kg$

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here kinetic energy of the incident alpha particle is given as

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now we have

$6.4 \times 10^{-13} = \frac{(9\times 10^9)(1.6 \times 10^{-19})^2(79)}{r}$

now we have

$r = 2.84 \times 10^{-14} m$

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3 years ago

What kind of EM waves are most dangerous to humans

zhuklara [117]

The most dangerous frequencies of electromagnetic energy are X-rays, gamma rays, ultraviolet light and microwaves. X-rays, gamma rays and UV light can damage living tissues, and microwaves can cook them. Hope this helps! =^-^=

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3 years ago

Early black-and-white television sets used an electron beam to draw a picture on the screen. The electrons in the beam were acce

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Answer:

3.25 × 10^7 m/s

Explanation:

Assuming the electrons start from rest, their final kinetic energy is equal to the electric potential energy lost while moving through the potential difference (ΔV)

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Given that V is the electron speed in m/s

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3 years ago

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Nitrogen: 1s2, 2s2, 2p3 is correct answer.

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3 years ago

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