<span>Light reflects from a smooth surface at the same angle as it hits the surface. For a smooth surface, reflected light rays travel in the same direction. This is called specular reflection. For a rough surface, reflected light rays scatter in all directions. This is called diffuse reflection.
</span>Diffuse reflection<span> is when light hits an object and reflects in lots of different directions. This happens when the surface is rough. Most of the things we see are because light from a source has reflected off it.</span>
Answer:
Carbon analysis of bones and teeth will give insight to the types of plant material the hominin consumed.
Explanation:
This is because carbon being the principal composition of plants, analysis of the teeth's and bones for carbon will give an insight of what the homini n consumed
The answer would be B because humans cannot see electrons so we visualize the electrons due to the theory
I think that the answer is A
It will take 1.03 sec for the wheel to reach its final operating speed.
Solution:
First we calculate for the angular acceleration a from the torque formula which is the product of the moment of inertia i and the angular acceleration a:
torque = ia
a = torque / i
We know that the moment of inertia i of a solid disk is i = 0.5*mr^2, where radius r is in meters:
a = torque / 0.5 * mr^2
Now, we substitute the values to the angular acceleration a equation:
a = 0.600 Nm / (0.5 * 2.00 kg * (0.07m)^2)
= 122.45 radians/s^2
We convert the final angular velocity Wf, which is the final operating speed 1200 rev/min, to rad/s:
Wf = 1200 rev/min * 2π/60 = 125.66 rad/s
For rotational motion,
Wf = Wi + at
125.66 rad/s = 0 + (122.45 rad/s^2)t
The time t is therefore
t = 125.66 / 122.45t
= 1.03 sec