There are 5 dwarf plabets
Answer:
3.86×10⁶ Newton/coulombs
Explaination:
Applying,
E = F/q....................... Equation 1
Where E = Electric Field, F = Force, q = charge.
From the question,
Given: F = 5.4×10⁻¹ N, q = -1.4×10⁻⁷ coulombs
Substitute these values into equation 1
E = 5.4×10⁻¹/ -1.4×10⁻⁷
E = -3.86×10⁶ Newtons/coulombs
Hence the magnitude of the electric field created by the
negative test charge is 3.86×10⁶ Newton/coulombs
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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How might a suit of armor be a good analogy for a function of the skeletal system?
It's a frame for your body and protects organs and armor protects your body from injury
The truck in the lead is covering 50 miles in one hour.
The car behind is covering 70 miles in one hour.The car is covering 20 miles more than the truck in one hour.So the car gets 20 miles closer to the truck in one hour.
Since they were 20 miles apart at the beginning of the story, one hour is enough time for the car to catch up to the truck.