From the calculation, the wavelength of the waves is about 264 nm and belongs to the ultraviolet spectrum.
<h3>What is photoelectric effect?</h3>
The term photoelectric effect can be used to describe the loss of electron from the surface of a metal. Given that; KE = E - W, where;
KE = kinetic energy of the emitted photoelectron
E = energy of the photon
W = work function of the metal
λ= hc/E
λ=
λ= or 264 nm
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<span>In human relation, imagined risks are defined as an exageration of a risk which can cause a person to develop a behaviour that negatively affect his or her self confidence. Imagined risks are imaginary and they are created out of fear and doubt. For instance, worrying about the possibility of a nuclear attack is an example of an imagined risk.</span>
Chemical reactions produces new substances and may be a synthesis, decomposition, combustion, replacement, or neutralization reaction.
<h3>What are chemical reactions?</h3>
Chemical reactions are changes which occurs in substances producing changes in the chemical properties of the substance.
The chemical reactions described are as follows:
- Synthesis: at least two reactants and one product
- Decomposition: at least one reactant and two products
- Combustion: oxygen is one of the reactants and large amount of energy is released
- Replacement: at least one or more atoms replaces a part of a compound
- Neutralization: the products are always salt and water
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Answer:
rpm= 916.7436 rev/min
Explanation:
First determine the perimeter of the wheel, to know the horizontal distance it travels in a revolution:
perimeter= π×diameter= π × 22 inches × 0.0254(m/inche)= 1.7555m
Time we divide the speed of the car, which is the distance traveled horizontally over time unit, by the perimeter of the wheel that is the horizontal distance traveled in a revolution, this dates us the revolutions over the time unit:
revolutions per time= velocity/perimeter
velocity= (60 mi/hr) × (1609.34m/mi) = 96560m/h
revolutions per time= (96560.6m/h) / (1.7555m)= 55004.614 rev/hr
rpm= (55004.614 rev/hr) × (hr/60min)= 916.7436 rev/min
A. Mass
b. Car's Kinetic Energy
c. Kinetic energy is the energy an object has due to its motion. The kinetic energy of an object is calculated from the velocity and the mass of the object.