The answer is <em>C.) The stethoscope was invented because the physician did not want to pt his head on women's' chests to listen to their heart and lungs.
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<em />The physician saw a problem (that he didn't want to place his head on women's chests to listen to their heart and lungs), so he solved it by inventing a stethoscope.
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I hope this helped!! :)) Have a blessed day!
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Answer:
Scoliosis can lead to osteoarthritis and degenerative changes in the spine, hips and knees. If a case is severe enough, internal organs may also be compromised or severely damaged.
Explanation:
The cause of physiological scoliosis is the human gait, which forces the spine into a threefold curve, alternately changing at every step. However, the innate normal asymmetries of the human body eventually establish permanent lateral curves of the spine, showing marked individual variations within the general law.
Hand foot and mouth disease can live on a surface for several days
Answer:
Explanation:
Over time, excessive alcohol use can lead to the development of chronic diseases and other serious problems including: High blood pressure, heart disease, stroke, liver disease, and digestive problems. Cancer of the breast, mouth, throat, esophagus, voice box, liver, colon, and rectum.
Answer:
Explanation:
Lab: Reactions
The goal of this lab is to demonstrate the effects of changing temperature and particle size on the rate of a chemical reaction. The purpose of this lab is to plan and perform controlled tests of multiple variables using repeated trials during an investigation about reaction rate. This is an inquiry lab. My hypothesis is that the effects of the different variables will have a major effect on the outcome of the results. The temperature will change dramatically by the multiple factors it will be exposed to. The different variables include the substance in the container, the temperature in the container. Also, the temperature of the room can affect the ending temperature of the cylinder after the experiment. The controlled variables are using the same thermometer and the amount of substance put into the vial.
The materials needed for the lab are listed above. The steps of the experiment do not change, only the substances used for the experiments. This includes started with the beaker and filling it with the cylinder with water. Then you use the thermometer to check the degree of the water. Then you use togs and place the beaker filled with water onto the hot plate. You turn on the hot plate and wait for the water to heat up for 5 minutes. Then you use togs and remove the beaker from the hot plate and turn the plate off. Then you use the thermometer and check the temperature of the heated water. You put the tablet into the heated water and time it. You repeat this process with all of the substances.
You should record all of the processes of the lab and write it all down.
Table A: Baseline Data for Tablet in Room Temperature Water Volume (mL) Temp. ( oC) Start Time End Time Elapsed Time (s) Trial #1 250 20 0 50 50 Trial #2 250 20 0 52 52 Trial #3 250 20 0 51 51 Average Time for Tablet to Dissolve 51 Table B: Time to Dissolve Tablet in Hot Water Volume (mL) Temp. ( oC) Start Time End Time Elapsed Time (s) Trial #1 250 40 0 22 22 Trial #2 250 40 0 24 24 Trial #3 250 40 0 20 20 Average Time for Tablet to Dissolve 22 Table C: Time to Dissolve Tablet in Cold Water Volume (mL) Temp. ( oC) Start Time End Time Elapsed Time (s) Trial #1 250 4 0 84 84 Trial #2 250 4 0 89 89 Trial #3 250 4 0 85 85 Average Time for Tablet to Dissolve 86 Table D: Time to Dissolve Tablet When Quartered Volume (mL) Temp. ( oC) Start Time End Time Elapsed Time (s) Trial #1 250 20 0 41 41 Trial #2 250 20 0 44 44 Trial #3 250 20 0 41 41 Average Time for Tablet to Dissolve 42 Table E: Time to Dissolve Tablet When Crushed Volume (mL) Temp. ( oC) Start Time End Time Elapsed Time (s) Trial #1 250 20 0 18 18 Trial #2 250 20 0 18 18 Trial #3 250 20 0 15 15 Average Time for Tablet to Dissolve 17 Summary Tables Table F: Summary Table for the Effect of Temperature Volume (mL) Temp. ( oC) Average Time (s) Hot water 250 40 22 Room temperature 250 20 51 Cold water 250 4 86 Table G: Summary Table for the Effect of Surface Area Volume (mL) Temp. ( oC) Average Time (s) Tablet form 250 20 51 Quartered 250 20 42 Crushed 250 20 17
The different substances used in the experiment reacted differently based on the heated water and conditions of the outside temperature. This was affected by all of the variables. I did not do any background research before doing this experiment so I do not have any prior experience on this topic. My hypothesis was correct after conducting the experiment. This constantly changed based on the variables and substance used.
