Please write a detailed explanation on why niobium can be used to strengthened steel.

Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

What four properties do all waves have in common