For a double slit, as the slit width is increased, what happens to the pattern? Does the angle to thefirst diffraction minimum increase or decrease or stay the same? Does the angle to the first interferencemaximum increase or decrease or stay the same?

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

A15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°c to 175°c. what is the specific heat capacity of iron?