To find this simply draw a triangle with the hypotenuse being 15 and the angle between the hypotenuse and bottom leg is 20. The horizontal component is the horizontal leg. to find this you would use cos and then solve for the bottom leg.
When you do, you get 15cos(20)
the decay half-life of a radioactive material can be changed. Radioactive decay happens when an unstable atomic nucleus spontaneously changes to a lower-energy state and spits out a bit of radiation. This process changes the atom to a different element or a different isotope.
Answer:
F / m = G M / R²
Explanation:
The equation for the law of universal attraction is
F = G m M / R²
Where R is the distance to the object from the center of the earth,
F / m = G M / R²
In this case the F / m ratio is called gravity acceleration and is equivalent to the electric field in electricity.
In this case, since the gravitational force is always attractive, the direction of g is towards the center of the body and the quantity R varies very little because the radius of the Earth is very high.
R = Re + h
R = Re (1+ h / Re)
Re = 6.37 10⁶ m
We value of h in the Earth is less than 10⁴ m
The electric potential energy is
Explanation:
The electric potential energy stored in a capacitor is given by the equation
where
Q is the charge stored in the capacitor
is the potential difference between the plates
For the capacitor in this problem, we have
is the charge
is the potential difference
Substituting, we find the potential energy:
Learn more about capacitors:
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