Answer:
varn=n1+1ehvkT–1
Explanation:
This is Einstein's equation.
One very useful definition if energy is "the ability to do work".
Speed must an electron have if its momentum is to be the same as that of an x-ray photon with a wavelength of 0. 85 nm is 8.6*10^5m/s.
To find the answer, we have to know about the energy of photon.
<h3>What is the speed of the electron here?</h3>
- As we know that the momentum of an x-ray photon with a wavelength w,
where; h is the plank's constant.
- Thus, the momentum will be,
- We have to find the speed of the electron, thus, we have the expression of linear momentum as,
Thus, we can conclude that, speed must an electron have if its momentum is to be the same as that of an x-ray photon with a wavelength of 0. 85 nm is 8.6*10^5m/s.
Learn more about the energy of photon here:
brainly.com/question/3584036
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Answer:
Angular momentum of the system is 16221465.4617 kgm²/s
Explanation:
Given that;
length of the side of the triangle L = 82 M
m = 75.0 kg × 100 = 7500 kg
distance of each vertex from center R = L/√3 = 82/√3 = 47.34 m
effective acceleration a = 9.8 / 2 = 4.9 m/s²
we know that; effective acceleration is being provided by centripetal acceleration.
so
a = R × w²
rate of rotation w = √( a / R) = √( 4.9 / 47.34) = 0.3217 rad/seconds
Moment of Inertia I = 3mR²
we substitute
I = 3 × 7500 × (47.34)²
Also, Angular momentum L is expressed as;
L = I × w
so
L = 3 × 7500 × (47.34)² × 0.3217
L = 16221465.4617 kgm²/s
Therefore, Angular momentum of the system is 16221465.4617 kgm²/s
(C) the government agency that regulates these types of chemicals