The frequency of a wave is the reciprocal of its period.
A period of 0.008 sec means a frequency of
1 / 0.008 sec = 125 per sec . (125 Hz)
D.What is the best angle to throw a ball for maximum distance? Because this is the only question in above all of them which has some scientific investigation like angle that is use in many of the physics relations.
Dark matter may explain <span>unexpected orbital velocities of stars in galaxies.</span>
Answer:
n₂ = 1.15
Explanation:
Given,
Angle of incidence,θ₁ = 50°
refractive index of the glass,n₁ = 1.50
refractive index of liquid = ?
For largest refractive index angle of refraction should be equal to 90°.
Using Snell's law
n₁ sin θ₁ = n₂ sin θ₂
1.50 x sin 50° = n₂ sin 90°
n₂ = 1.15
Hence, refractive index of the liquid is equal to 1.15.
Answer:
R_eq = 6 Ω
Explanation:
In a series circuit the current is constant throughout the circuit and the resistance is the sum of all the resistances in it.
R_eq = ∑
in this case we have
R_eq = R₁1 + 3 R₂
where R₁ is the resistance of the fan and R₂ the resistance of each light, we must clarify that we will assume that the resistance of the lights does not change with temperature
let's calculate
R_eq = 3 + 3 1
R_eq = 6 Ω
