Question 1 1 pts The higher the density a fluid has, the larger its viscosity wi
ID: 1863529 • Letter: Q
Question
Question 1 1 pts The higher the density a fluid has, the larger its viscosity will be. True False Question 2 1 pts A uniform, solid piece of pure material has a mass of 1 kg and a volume of 1 m3. If both the mass and volume of that same solid material were reduced, the new density would be A. Less than the original B. Greater than the original C. The same as the original O A O C Question 3 1 pts If a single measurement is made, the best way to deal with error analysis is with A. LINEST B. Standard deviation C. Propagation of errorExplanation / Answer
1. Viscosity is the resistance of the fluid to move. Density is the amount of substance present in a cube of unit volume. There is no established relation between the these two property of a fluid, which is applicable to all fluids. These are few examples which shows that denser fluid have higher viscosity. For example water and honey, honey is more viscous than water and also denser than water. However if u consider the case of oil and water, water is denser than oil, but oil have higher viscosity. So clearly, we can't say that both are related. Hence the statement is false.
2. Density is defined as the amount of substance per unit volume which total mass divided by total volume for a uniform solid. If both mass and volume of the sold is reduced, it doesn't change the density. Density remains constant. Hence answer is C.
3. When we have a single set of measurement, then propogation error gives the best uncertanity estimate. In case of LINEST which use least square method to estimate the best fit, we need considerable number of measurements. Similarly standard deviation is also significant only when we have lot of measurements. Standard deviation represents the spread in the measurement values. In case of error propogation, we can estimate error with even a single measurement value. Answer is C
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.