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aliya0001 [1]
3 years ago
9

Why are some atoms radioactive

Physics
1 answer:
Dmitry_Shevchenko [17]3 years ago
8 0
Atoms<span> are made of three types of sub-atomic particle: neutrons and protons in the nucleus and electrons orbiting the nucleus. </span>Some<span> materials are </span>radioactive<span> because the nucleus of each </span>atom<span> is unstable and gives out nuclear radiation in the form of alpha particles, beta particles or gamma rays.</span>
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Which of the following tend to orbit the sun in long, narrow ellipses?
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Mrs. Waid drives her car up Route 8 at 80mph. If her car weighs 2500 lbs,
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Answer:

It have 1.359 joule kinetic energy.

Explanation:

  • Kinetic energy is defined as the energy of any object due to its state of motion.
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                                    K.E = \frac{1}{2}mv^{2} ...........................equation 1

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  • Substituting the values in equation 1, we get;

                                    K.E= \frac{1}{2} * 5511.56 * 0.0222^{2}

                                   K.E= 1.359 joule.

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3 years ago
Could someone help me on #7?
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