On a playground slide, a child has potential energy that decreases by 1000 J while her kinetic energy increases by 900 J. what o
1 answer:
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Answer:
Explanation:
Given the following data;
Frequency = 4.0 x 10⁹ Hz
Planck's constant, h = 6.626 x 10-34 J·s.
To find the energy of the electromagnetic wave;
Mathematically, the energy of an electromagnetic wave is given by the formula;
E = hf
Where;
E is the energy possessed by a wave.
h represents Planck's constant.
f is the frequency of a wave.
Substituting the values into the formula, we have;
<h2>MULTIPLE CHOICES</h2>
- What is the basic unit of all matter?
- OA neutron
- OB. atom
- OC. electron
- OD. proton
- OE. nucleus
- B. Atom
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- <u>Atom</u> is the smallest, <u>indivisible unit of a chemical</u> <u>element and the fundamental unit of matter</u>. It consists of a nucleus (neutrons + protons) surrounded by an electron cloud. The <u>atom</u> is the smallest unit of matter that cannot be divided chemically and is a building block with its own set of properties.