Which of the following will increase the strength of a copper electromagnet

A. Adding more loops to the wire
B. Using DC current (like from a battery) instead of AC current (like from the wall)
C. Increasing the current
D. Wrapping the copper wire around an iron nail
E. Using gold instead

Imagine that you have produced several versions of lactase, each of which differs from normal lactase by a single amino acid. describe a test that could indirectly determine which of the versions significantly alters the three-dimensional shape of the lactase protein.

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.

In pqr m< p=60 m< q= 30 and m