To find the length of the fence, we can use the formula for the area of a rectangle:
Area = length x width
We know that the area of the fence is 28 square feet and the width is 4 meters. However, we need to convert the width to feet since the area is given in square feet.
1 meter = 3.281 feet (approximately)
Therefore, 4 meters = 4 x 3.281 = 13.124 feet (approximately)
Now we can substitute the values into the formula:
28 = length x 13.124
To solve for the length, we can divide both sides by 13.124:
length = 28 / 13.124
length = 2.136 feet (rounded to three decimal places)
Therefore, the length of the fence is approximately 2.136 feet.
The number of electrons liberated from the surface of the metal when monochromatic light falls on it is determined by the intensity of the incident light. Increasing the intensity of the incident light will increase the number of electrons liberated from the metal surface.
This process is known as the photoelectric effect, and it occurs when photons of light with sufficient energy strike the surface of a metal. The energy of each photon is determined by the frequency of the light. If the energy of a photon is greater than the work function of the metal (the minimum energy required to liberate an electron from the surface), then an electron will be ejected from the surface.
When the intensity of the incident light is increased, the number of photons striking the metal surface increases. This means that there is a greater chance of a photon with sufficient energy striking the metal and liberating an electron. As a result, the number of electrons liberated from the metal surface increases with increasing intensity of the incident light.
Hello, are you a girl or a boy?
Salut, est-ce que tu es une fille ou un garçon ?