WILL REWARD Which of the following statements about the conservation of energy are TRUE? * 1. The total amount of notential energy an obiect has at thebeginning of a fall will equal
2. the total mechanical energy of an object will decrease as it falls
3. the potential energy of an object is i’ll stay the same as it falls
4. the total mechanical of an object will increase as it falls

Answer quickly (15 points) a comet is approaching earth. describe earth’s gravitational pull as the comet gets closer to it. a. remain constant b. increase c. decrease d. reversed

When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.