The science class decides to build an electromagnet. They wrap a strand of wire around a large iron nail three times, and connect the wire to a battery. The magnet is strong enough to lift a two pound metal plate. The class wants to be able to lift a four pound plate with the electromagnet. What should they do?

If the same amount of cacl2 is added to equal volumes of water and maple syrup, which will have the higher temperature?

56.16 gregor mendel was the first scientist to use statistics to analyze scientific data. before mendel's experiments, scientists believed that organisms acquired traits from their environment and passed them on to their offspring. after mendel's discoveries were accepted, scientists realized that traits passed to offspring were the result of genes being passed from parents to offspring. this is an example of pls

The identities of substances are the same before and after which type of change