Answer:
The answer is (d) is totally reflected
Explanation:
Using the total internal reflection concept.
This concept state that:
"If the angle of incidence is greater than the critical angle then the light will not refract but it will reflect back totally"
Using the above statement, as incident angle is 42 degree and critical angle is 41 degree it means incident angle is greater than the critical angle. Therefore, light will not refract but it will totally reflected.
Answer:
because on an interstate or freeway, the car is cruising at a constant speed, without speeding up, slowing down, stopping, or turning constantly. In a city, cars constantly have to stop, slow down, speed up, which burns more gas in a shorter period of time
Explanation:
We have a wave function: D(y,t) and we want to know some things about it. 1. The direction the wave is travelling is negative y direction or -y. 2. Since sound waves are longitudinal waves, this sound wave is oscillating along the y axis. 3. The wavelength we can get from k=2π/λ, k is the wave number, λ is the wavelength. So λ=2π/k=6.28/8.96=0.7 m. 4. Before i get the wave speed i will calculate the period of oscillation. It can be calculated from: ω=2πf where ω is angular frequency and f is wave frequency. So f=ω/2π=3140/6.28=500 Hz and the period is T=1/f=1/500=0.002 s. 5. Wave speed is v=λ*f= 0.7*500=350 m/s.
Answer:
one of the reasons is that it wets the glass thermometer it also doesn't detect slight changes in temperature of the atmosphere it has a high boiling point I don't know the rest
The uniform current density in the wire is 5.43 x 10²⁷ A/m².
<h3>Current density in the wire</h3>
The uniform current density in the wire is calculated as follows;
J = total current / total area
The given parameters:
- Conduction of the wire = 8.49 x 10²⁸ e/m²
- time, t = 2.5 x 10⁻¹⁴ s

Learn more about current density here: brainly.com/question/15266434
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