Answer the following. Long answer question onlyf
Answers
1=(A)=The process of conduction in metals is important for engineers to understand when preparing to pass the PE Mechanical exam.
(B)=More than 100 heads of states convened to address the issue of environment protection and socio_ economic development.
2=The density decreases from 0.9970 g/mL to 0.9718 as it is heated. This makes sense because, as heat is added to the liquid water, there is the greater kinetic energy of the molecules and there are also more vibrations of the water molecules. ... Density increase as the temperature decreases.
3=In conduction, heat transfer takes place between objects by direct contact. In convection, the heat transfer takes within the fluid. In radiation, heat transfer occurs through electromagnetic waves without involving particles. The heat transfer takes place due to the difference in temperature.
4=Wind is caused by differences in atmospheric pressure. When a difference in atmospheric pressure exists, air moves from the higher to the lower pressure area, resulting in winds of various speeds. On a rotating planet, air will also be deflected by the Coriolis effect.
5=A clinical thermometer is a thermometer used to measure human body temperature. Most made in the 20th century are mercury-in-glass thermometers. They are accurate and sensitive, having a narrow place where the mercury level rises very fast. ... Medical thermometers are cleaned before and after each use, with alcohol.
6=(1)Take a clinical thermometer and hold it horizontally with a reading scale towards your eye.
(2)Do not hold the thermometer from the bulb.
(3)Rotate the thermometer slightly clockwise and anticlockwise.
(4)The end of the silvery thread shows the reading of temperature.
7=Land and sea breezes develop because of differential heating and cooling of adjacent land and water surfaces. Water has a greater heat capacity than land, i.e. land absorbs and emits radiation more efficiently and faster.
8=Today, to benefit humankind, radiation is used in medicine, academics, and industry, as well as for generating electricity. In addition, radiation has useful applications in such areas as agriculture, archaeology (carbon dating), space exploration, law enforcement, geology (including mining), and many others.