The family of electromagnetic waves ranges from the Long Radio waves to the gama rays.
All of that contain electromagnetic energy and move at the speed of light.
But what distinguish one from another is their wavelengh.
Or, if you like, its counterpart: their frequency. (as can be seen in the equation c = λ . f where c is the speed of light, λ is the wavelengh and f is the frequency).
The shorter the wavelengh (the greater the frequency) more powerful (more energy it contains) is the electromagnetic wave.
From all the different kinds of electromagnetic waves of the spectrum, the less powerful (less energetic) are the Long Radio waves (λ in metres) and the more powerful ones are the gama rays (λ in m).
:-)
Downward movement under the force of gravity only.
Answer:
Basically , they both are interrelated.
Work is the force into displacement.
And power is the rate of doing work.
so work is basically power into time.
Answer:
10.2 m
Explanation:
The position of the dark fringes (destructive interference) formed on a distant screen in the interference pattern produced by diffraction from a single slit are given by the formula:
where
y is the position of the m-th minimum
m is the order of the minimum
D is the distance of the screen from the slit
d is the width of the slit
is the wavelength of the light used
In this problem we have:
is the wavelength of the light
is the width of the slit
m = 13 is the order of the minimum
is the distance of the 13th dark fringe from the central maximum
Solving for D, we find the distance of the screen from the slit:
75% is the efficiency of the cell.
Explanation:
Internal resistance is the resistance generated due to the devices present in the circuit. Most preferably, it is the resistance of the battery connected to the circuit.
As the current, resistance of the resistor and the internal resistance of the battery is given as 6 A, 6 ohms and 2 ohms.
Then the efficiency of the cell is
So, the efficiency of the cell is
Then, E =
So, the efficiency is 75%.
75% is the efficiency of the cell.