There are two types of photons (particles of light) used in this simulation, Visible and Infrared. Select the visible photon first.

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?

Three resistance 4,4 and 6 ohms are joined in the series.the total resistance will be

Resistivity of a material is the resistance of a cm long sample of the material of 1 cm2 cross-sectional area.