Answer: 8.81 J
Explanation: The scalar or dot product of 2 vector equals the product of the magnitude of both vectors and the cosine value of the angle between them
Magnitude of vector f (force) as given in the question = 12.5N
Magnitude of length = 0.75m
Angle between vectors = 25°
F. Δr = 12.5 * 0.75 * cos 25
F. Δr = 12.5 * 0.75 * 0.9063
F. Δr = 8.81 J
<span>pseudoscience includes beliefs theories, or practices that have been or are considered scientific, but have no basis in scientific fact.
This could mean the were disproved scientifically, can't be tested or lack evidence to support them.
Examples:Channeling- involves communicating with a spirit through a person
Astrology- beliefs that humans are affected by the position of celestial bodies
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Work done by gravity = 23,520 J = mgh. Therefore m= 23520/ 30 x 9.8 = 80 kg.
Power = work / time --> time = work / power = 3600 J / 275 watts = 13.1 seconds.
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The fundamental quantum number, n, describes the energy of an electron and most likely separation from the nucleus.
<h3>Who or what is an electron?</h3>
A negative charges subatomic particle known as an electron can either be free or attached to an atom (not bound). One of the three main types of atoms within about an atom is an electron that is bonded to it; the other two were protons and neutrons.
<h3>What is an example of an electron?</h3>
The smallest elemental component of an atom, the electrons has a negative charge. In an atom, there are an equal amount of protons and electrons. One electrons and one protons are all that the hydrogen atom has.
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