Which configuration would produce an electric current? A) Rotate a coil of copper wire between two magnets. B) Connect a wire be
2 answers:
You might be interested in
Answer:
d)
Explanation:
β₁ = sound level of sound at rock concert = 120 dB
β₂ = sound level of sound due to whisper = 21 dB
I₁ = Intensity of sound at rock concert
I₂ = Intensity of sound due to whisper
sound level of sound at rock concert is given as
Eq-1
sound level due to whisper is given as
Eq-2
subtracting Eq-2 from Eq-1
The speed of the car is 18.8 m/s
Explanation:
The variables that represent the givens are:
m = 2000 kg (mass of the car)
r = 30 m (radius of the curve)
t = 10 s (time elapsed to cover the curve)
The unknown is the speed of the car, which is given by:
where d is the distance covered by the car during the time t.
Here the car covers a circular trajectory of radius r, so the distance covered is
Therefore, the speed of the car is
Learn more about circular motion:
#LearnwithBrainly