Answer: F = 106.72 N
Explanation: <u>Newton's</u> <u>Law</u> <u>of</u> <u>Universal</u> <u>Gravitation</u> states that two masses attract each other by a force pointing in a straight line to the center-of-mass of both masses.
It is directly proportional to the masses and inversely proportional to the square of their distance, represented as:
where
G is gravitational constant whose value is 6.67x10⁻¹¹ N(m/kg)²
m are masses in kg
r is distance in m
The force between the moon and a person with mass of 66kg is:
F = 106.72 N
The force between a person with mass of 66kg and the moon is 106.72 N.
Complete question:
How many x-ray photons per second are created by an x-ray tube that produces a flux of x rays having a power of 1.00 W. Assume the average energy per photon in 78.0 keV.
Answer:
The number of x-ray photons per second created by the x-ray tube is 8.01 x 10¹³ photons/sec
Explanation:
Given;
power of the flux produced, P = 1 W = 1 J/s
energy per photon, E = 78 keV
Convert the energy per photon to J
E = 78 x 10³ x 1.6 x 10⁻¹⁹ = 1.248 x 10⁻¹⁴ J / photon
let the number of photons = n
n(1.248 x 10⁻¹⁴ J / photon) = 1 J/s
Therefore, the number of x-ray photons per second created by the x-ray tube is 8.01 x 10¹³ photons/sec
Are you good is every thing alr
not sure which average this is but one of the averges is 12.5 m/s^2... it's been a while since physics so I'm a little rusty
btw, to find this average you have to divide 60 by 4 to get 15m/s^2.
next you divide 60 by 6 to get 10m/s^2.
then you add 15 and 10 to get 25.
finally, you divide 25 to get 12.5m/ s^2.