A group of students completed the “Newton’s Laws and the Interaction of Objects” activity on pages 260 and 261 of the textbook. They wrote the following statements to describe the separating vehicles: I. The magnitudes of the forces on both vehicles were the same. II. The magnitudes of the acceleration of both vehicles were the same. III. The magnitudes of the impulses on both vehicles were the same. IV. The speeds of both vehicles were the same once the spring had spread out.

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =