Answer:
E = 4 × 10⁻¹⁹ J
Explanation:
It is given that,
Wavelength = 510 nm
Frequency = 
We need to find the approximate energy of one photon of this light. The formula for the energy of a photon is given by :
or
E = 4 × 10⁻¹⁹ J
Hence, the correct option is (d).
All of the above (correct me if I’m wrong) :)
I'm not writing your essay... but many children and teens are affected by what they see on TV and there is no exception when it comes to their favorite sports player.
Answer:
Explanation:
A line has a general equation of
where b is the y-intercept and slope of m.
Since 
is the value of y when 
, it is the point of intersection of the line with the y-axis, hence the y-intercept is 
.
We are given the slope is 
So the equation of the line is
Answer:
5 cm
Explanation:
First, let's find the perimeter of the rectangle.
The perimeter of a rectangle is:
p=2l+2w
In this rectangle, we know that the length is 7 centimetres and the width is 3 centimetres.Therefore, we can substitute 7 in for l and 3 for w.
p=2(7)+2(3)
Multiply 2 and 7
p=14+2(3)
Multiply 2 and 3
p=14+6
Add 14 and 6
p=20
We know the perimeter of the rectangle is 20 centimeters. We also know that the perimeter of the square is equal to the perimeter of the rectangle.
The perimeter of a square is:
p=s+s+s+s or p=4s
We know that the perimeter of the square is equal to the rectangle. The rectangle's perimeter is 20. Therefore, we can substitute 20 in for p.
20=4s
Now, we want to find what the side length is. We have to get s by itself. 4 and s are being multiplied. To reverse this, divide both sides by 4.
20/4=4s/4
20/4=s
5=s
The side length of the square is 5 centimeters.
