Answer:
152 photons
Step-by-step explanation:
Data provided in the question:
wavelength of the green light, λ = 550 nm = 550 × 10⁻⁹ m
Total energy = 5.50 × 10⁻¹⁷ J
Now,
Energy =
here,
n = number of photons
h = Plank's constant = 6.63 × 10⁻³⁴ J.s
c = speed of light = 3 × 10⁸ m/s
Therefore,
5.50 × 10⁻¹⁷ J =
or
( 5.50 × 10⁻¹⁷)( 550 × 10⁻⁹) = n(6.63 × 10⁻³⁴)(3 × 10⁸)
or
3025 × 10⁻²⁶ = n(19.89 × 10⁻²⁶ )
or
n = 152.086 ≈ 152 photons
Answer:
B - The arrows should be length of 6.
D - The arrows should start at zero.
E - The arrows should point in the negative direction
Hope this helps! :)
Answer:
x = 90
Step-by-step explanation:
First, you'll want to take the three equations you see and set them up in an addition equation to add up to 360 like so...
- 4x + 2y + x + 2y - x = 360
Since two opposites add up to zero, they can be removed from the equation, therefore, removing (+ x) and (- x) from this equation:
Collect like terms (2y and + 2y):
Move the variable (+ 4y) to the right hand side of the equation and change its sign:
Divide both sides of the equation by 4.
x = 90 - y
Ignore the i y and you got your answer. x = 90. Hope this helped!
Answer:
Option c.) $4427.62
Step-by-step explanation:
we know that
The compound interest formula is equal to
where
A is the Final Investment Value
P is the Principal amount of money to be invested
r is the rate of interest in decimal
t is Number of Time Periods
n is the number of times interest is compounded per year
in this problem we have
substitute in the formula above
800*.035 = 28 This is interest per year.
28 * 7 = $196 Total interest earned for seven years
Total money in account is $996