A beam of light, initially travelling in the air, strikes water surface at an angle of 24.5° with the normal. If the speed of light in water is 2.22 × 10^8ms^-1, determine the angle of refraction?​

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

Write down two additional questions about earth's magnetic field that will make your presentation more informative.