How would replacing the aluminum core of an electromagnet with an iron core affect the electromagnet A. its strength would stay the same
B. it would become stronger
C. its strength would vary randomly
D. it would become weaker

Suppose that recording station n is located 200 km north of the epicenter of an earthquake, and recording station s is located 100 km south of the epicenter of the same earthquake. which of the following statements would be true?

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Arrange the images in order to show how lake-effect snow occurs.