How can you calculate the critical angle using the refractive index? (I know that the formula is sin c = 1/n but I'm not sure how to rearrange this so that I only have c on one side).

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation:

b.

explanation:

if they have a finite resultant

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures