20 degrees F! 0 degrees C is equivalent to 32 degrees F, so 20 degrees F is colder.
So you work hard and you do well i’m getting good grades or doing something better.
Answer:
P = n P₀ 4.9 10¹⁴ Pa
Explanation:
The radiation pressure for full absorption is
P = S / c
Where S the pointing vector, which is equal to the intensity of the beam that is defined as the energy per unit area per unit time
The energy of the protons can be calculated
Em = K = ½ m v²
Area
A = π r²
Intensity is
I = n ½ m v² / π r²
I = ½ n m /π v² / r²
We replace
S = U / t A
S = ½ n m /π v² / r² Δt
The pressure is
P = 1/c (½ n m /π (v / r Δt)²2
Δt = 45 10⁻⁹ s
P = n [½ m /πc (v/r)²] 4.9 10¹⁴
The amount in square brackets is the pressure that a proton creates, which is why it is useful
P = n P₀ 4.9 10¹⁴ Pa
Where Po is the pressure created by a proton
Let's call the first number n, and the second number m.
n = 2m + 9 (9 more than twice the second number)
If the sum is 129, that means n + m = 129.
Now we can substitute the first expression (n = 2m + 9) into the second expression (n + m = 129), replacing the n.
(2m + 9) + m = 129
3m + 9 = 129
3m = 129 - 9
3m = 120
m = 120/3
m = 40
Now that we know m, we can find out n by replacing the m with 40 in the first expression (n = 2m + 9):
n = 2(40) + 9
n = 80 + 9
n = 89.
Therefore, n = 89, and m = 40.
