Cecilia is combing her hair. She notices that her hair and the comb have developed an electric charge. What will happen when she holds the comb near a small, uncharged object?

1. combine iron and copper (ii) sulfate solution. (hint: iron will form the iron (iii) ion) fe + cuso4 → 2. combine lead (ii) nitrate and potassium iodide solutions. pb(no3)2+ kl → 3. combine magnesium metal and hydrochloric acid solution. mg + hcl → 4. electrolysis (splitting) of water. h2o → 5. burning magnesium. mg + o2 →

In which of these cases are the two wave points considered to be in phase with each other?

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?