Mr Mann cut a cucumber. Mr Mann said, you have performed a chemical change. Is he right?​

Which of the following would not be taken into consideration when describing the quality of a sound

What is the length x of the side of the triangle below? (hint: use the cosine function)

Which example has gravitational potential energy? a.a horse slowing down from a run b.an apple about to fall from a tree branch c.a bicycle being pedaled down a horizontal path d.beaker sitting on the floor