Answer:
True
Explanation:
Solids, Liquids, and Gases are all make up of <u><em>atoms and molecules. </em></u>
Answer:
The solar radiation is first intercepted by Earth's atmosphere, just a small part of the radiation is absorbed by gases such as water vapor. Some of the radiation is reflected back to space by the clouds and Earth's surface.
Answer: When work is positive, the environment does work on an object
Explanation:
Answer:
40251.7 N
Explanation:
Stress is given as Force per unit Area and expressed as 
where F is the force exerted and A is the area on which the force acts. Making F the subject of the formula then 
Area, 
where r is radius which is equivalent to half the diameter. In this case, the diameter is given as 50 mm hence radius will be 25 mm and converted to meters it is 0.025 m
Substituting 20.5 MPa which is 
for 
then the force will be 
