When you look at a white light bulb through red sunglasses, why does the light look red to your eyes? What happened to all the other colors? Explain.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?