Answer:
no you would not hear an echo if you shouted in your bedroom
Explanation:
Echo is a sound produced when the original sound is reflected by walls of a given room. ... So for the case of a bedroom, no echo is produced because there are stuff and the furniture block the sound from reaching the wall hence no bouncing back of sound.
so sorry if i'm wrong :)
Answer:
13.26°
Explanation:
Using Snell's law as:
Where,
is the angle of incidence ( 35.0° )
is the angle of refraction ( ? )
is the refractive index of the refraction medium (glass, n=2.5)
is the refractive index of the incidence medium (air, n=1)
Hence,
Angle of refraction= sin⁻¹ 0.2294 = 13.26°.
<u>13.26° is the angle of the beam with the normal in the glass.</u>
Answer:
D. Flow separation is caused due to adverse pressure gradient in the flowing fluid.
Explanation:
Flow separation :
When adverse pressure gradient become dominate then phenomenon of flow separation occurs.In the other words when boundary layer is form against the adverse pressure then phenomenon of flow separation occurs.The adverse pressure means a opposing which act in the opposite to the direction of fluid flow.Due to flow separation eddy formation occurs and these eddy leads to increases the losses in the fluid flow.Due to flow separation fluid leaves the solid surface and form eddies.
So the answer is D.
Rmax = 4Hmax, that happen if the elevation of a projectile is 45°
You need heat in order to melt a rock, so the answer would be heat energy
