If an electrically neutral atom has 4 protons and 4 neutrons and it loses 2 electrons,
what is its electrical charge?
1. positive 2
2. negative 2
3. neutral
4. varies

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d