Answer:
The answer to your question is 3.27 m
Explanation:
Data
q₁ = -40 x 10⁻⁶ C
q₂ = 108 x 10⁻⁶ C
F = 4 N
d = ?
K = 9.9 x 10⁹ N m²/C²
- Use Coulomb's law to solve this problem.
F = Kq₁q₂ / d²
- Solve for d²
d² = Kq₁q₂ / F
- Substitution
d² = 9.9 x 10⁹ (40 x 10⁻⁶)(108 x 10⁻⁶) / 4
- Simplification
d² = 42.768 / 4
d² = 10.692
- Result
d = √10.692
d = 3.27 m
Hydroelectric power is generated from moving water is true.
Option A.
<h3><u>Explanation:</u></h3>
Hydroelectric power is the type of renewable source of energy which is obtained from turning a turbine through a running source of water like river or waterfall and producing the electrical energy from it. Running source of water is a must need for a hydroelectric power.
Oil or gasolene is actually petroleum which is mined from under the earth surface which is then burnt to obtain energy. Its used to produce jet fuel, but isn't a renewable source of energy.
Propane is also a byproduct of gasolene which is non renewable source of energy.
Geothermal energy is renewable source of energy, but it doesn't require a solar cell to produce the power.
Answer:
Δd = 7.22 10⁻² m
Explanation:
For this exercise we must use the dispersion relationship of a diffraction grating
d sin θ = m λ
let's use trigonometry
tan θ = y / L
how the angles are small
tant θ = sinθ /cos θ = sin θ
we substitute
sin θ = y / L
d y / L = m λ
y = m λ L / d
let's use direct ruler rule to find the distance between two slits
If there are 500 lines in 1 me, what distance is there between two lines
d = 2/500
d = 0.004 me = 4 10⁻⁶ m
diffraction gratings are built so that most of the energy is in the first order of diffraction m = 1
let's calculate for each wavelength
λ = 656 nm = 656 10⁻⁹ m
d₁ = 1 656 10⁻⁹ 1.7 / 4 10⁻⁶
d₁ = 2.788 10⁻¹ m
λ = 486 nm = 486 10⁻⁹ m
d₂ = 1 486 10⁻⁹ 1.7 / 4 10⁻⁶
d₂ = 2.066 10⁻¹ m
the distance between the two lines is
Δd = d1 -d2
Δd = (2,788 - 2,066) 10⁻¹
Δd = 7.22 10⁻² m
Answer:
7 miles southwest
9 steps to the left
75 mph north
Explanation:
A vector quantity is any physical quantity that specifies the magnitude of the quantity and its direction.
So, the choices that gives a magnitude and direction are vectors.
The other type of physical quantities are the scalar which only specifies the magnitude but no direction;
9 steps to the left and 7 miles southwest are called displacement
75 mph north is velocity
