Choose the best answer from the choices provided. If an object is neutrally buoy
ID: 111155 • Letter: C
Question
Choose the best answer from the choices provided. If an object is neutrally buoyant (does not sink or float) in fresh water, the same object placed into salt water would A sink. B either sink or float. C do nothing. D float. I blow up a balloon, tie it off, and take it to the bottom of the swimming pool. What will happen to the balloon and the air inside it? A The balloon will get bigger and the air inside the balloon will be less dense (molecules move further apart). B The balloon will get smaller and the air inside the balloon will be more dense (molecules move closer together). C The balloon will get bigger and the air inside the balloon will be more dense. D The balloon will get smaller and the air inside the balloon will be less dense. I turn a glass upside down, trap the air in it by putting it in water, and then I take the glass down to 10 metres/33 feet. The air space would A become half the size it was at the surface. B not change in size. C become 1/3 the size it was at the surface. D become 2/3 the size it was at the surface. 4. If I am not able to equalize (clear) my body air spaces, it may be because I have A seasickness. B heart disease and high blood pressure. C a cold, allergy or another medical problem. D anxiety If my ears or sinuses hurt while I am descending (going down), it usually means A my air spaces are equalized. B my mask strap is too tight. C I am feeling a squeeze and need to clear. D my mask is too small.Explanation / Answer
D. Explanation: it will float in salt water because of the increase in the water it displaces and increase in the upward force. B. Explanation : the reason is the weight of water displaced no longer exceeds the weight of air and starts decreasing in volume and weight stays the same.