When asked how to create an electromagnet, he best andwe would be, "you can create an electromagnet by"? a. applying a direct current to a non magnetic material in order to create a electromagnetic field b. covering a wire with insulation and applying a direct electrical current to the magnet c. coiling a ferromagnetic material, wrapping in an insulator and applying a current to the coil d. wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

What are the applications of electromagnetic waves

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?