The data listed below are for mechanical waves. Which wave has the greatest energy? amplitude = 7 cm; wavelength = 12 cm; period = 14 seconds amplitude =12 cm; wavelength = 14 cm; period = 7 seconds amplitude = 14 cm; wavelength = 7 cm; period = 12 seconds
Answers
Explanation :
The amplitude, wavelength and time period of three waves are given.
We know that energy of a wave is given by :
It is clear that energy of a wave is inversely proportional to the wavelength i.e
So, the wave having less wavelength will have the greatest energy.
Also, we know that energy of a wave is directly proportional to the square of amplitude i.e.
So, again the wave having maximum amplitude will have maximum energy.
Hence, the correct option is (C) i.e. "amplitude = 14 cm; wavelength = 7 cm; period = 12 seconds".
The equation for the energy of a wave is given by the equation of E = A^2 where E is the energy of the wave and A is the amplitude. The higher the amplitude, the greater the energy of the wave is and vice versa. An amplitude of 14cm has the greatest energy of the wave followed by 12cm and then 7cm.
Related Questions
Given the reaction: Mg(s) + 2 AgNO3(aq) → Mg(NO3)2(aq) + 2 Ag(s) Which type of reaction is represented?
Which end of a water molecule is positive and which end is negative and why?
Which list of nuclear emissions is arranged in order from the greatest penetrating power to the least penetrating power?(1) alpha particle, beta particle, gamma ray(2) alpha particle, gamma ray, beta particle(3) gamma ray, alpha particle, beta particle(4) gamma ray, beta particle, alpha particle
In the formula X2O5, the symbol X could represent an element in Group(1) 1 (3) 15 (2) 2 (4) 18
B. 5.74 x 10^-7 J
C. 2.07 x 10 ^15 J
D. 8.6 x 10 ^ 4 J
Answers
Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. The energy of wave is 2.08×10⁻¹⁵J.
What is electromagnetic wave?
Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave .There is a relation between energy of wave. frequency of wave
Mathematically,
E=hv
where,
E = energy of electromagnetic wave
h is planks constant having value 6.67×10⁻³⁴js
v= frequency of wave
substituting the given values
E= 6.67×10⁻³⁴js×3.12 x 10¹⁸ s⁻¹
E= 2.08×10⁻¹⁵J
Therefore the energy of wave is 2.08×10⁻¹⁵J.
To know more about electromagnetic wave, here:
#SPJ2
Answers
Answers
Answers
Answer : Selenium
Explanation :
The complete question is attached in the attachment.
Out of the given options, Selenium is the one which is most brittle element.
As selenium is a metalloid or a crystalline non metal which is lustrous and is ductile in nature and is highly brittle in nature.
Selenium is the most brittle out of all the other elements
color
formation
shape
texture
Answers
The rocks are classified as igneous, metamorphic, and sedimentary use the formation for classification purposes.
What are the 3 types of rocks existing on earth?
The outermost of them, called the crust, is composed of three types of rocks: magmatic, sedimentary and metamorphic. They are defined through the origin of several minerals and can be characterized with chemical composition, texture or shape, but the most used specification is based on composition.
The property does Valerie use for classification purposes is formation.
See more about rocks at brainly.com/question/19930528
#SPJ5
I remember having this question on a quiz a while back
Answers
Explanation:
Mass of the cube -1 = 8.91 g
Mass of the cube-2 = 8.88 g
Volume of the cube-1 = Volume of cube-2 = V
Density of the cube-1 = D
Density of cube-2 = D'
Density directly depends upon mass of the substance and inversely depends upon volume of the substance.
Here volume of the both cubes are same but masses are different. So, in this case densities of both cubes can be compared on the basis of masses.
This difference in densities of same material can be due following possibles:
1. May be an impurity present in the one of the cubes for which they have given different values their mass.
2. Weighing may not be working well.
3. May be an air trapped inside in one of the cubes.