As you read the text, you will encounter the following sentences (or similar sen

Question

As you read the text, you will encounter the following sentences (or similar sentences). After reading, if you think the sentence is true, write a response that would convince a classmate that the sentence is indeed true using the information in the text. If you think that the sentence is not true, write a response that would convince a classmate the sentence is not true the sentence is not trugthe namaio Part A A 10 cm radius Styrofoam sphere is submerged in water. So is a 10 cm radius lead sphere. The buoyant force exerted by the water on the Styrofoam sphere is greater than the force exerted on the lead sphere. (Section 10.5) including spaces). 3800 Character(s) remaining Essay answers are limited to about 500 words (3800 characters maximum, Submit My Answers Give Up Part B Hot air balloons could be improved by filling them with hydrogen instead of heated air. (Section 10.7) Essay answers are limited to about 500 words (3800 characters maximum, including spaces) 3800 Character(s) remaining

Explanation / Answer

Part A :
This statement is not true. The styrofoam sphere tends to float on water because it has less density and
the lead sphere is more dense hence it will sink. For floating object like styrofoam sphere the forces on
either side i.e) buoyancy force and gravity are equal.  A heavy object like lead sphere that sinks has a
greater buoyant force then the same size/radius floating object like styrofoam sphere.
Note : Buoyant force is directly proportional to the displacement of liquid.

Part B :
Yes hydrogen is better than heated air because it much lighter and less dense, however it has
high flammability and can catch a fire causing explosions, hence for safety reasons hydrogen
is a concern.

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