The quantity called mass density is the mass per unit volume of a substance. Express the following mass densities in SI units. You may want to review (Pages 23 - 27). For help with math skills, you may want to review: Conversion Between m and cm Conversion Between mg.g.kg Aluminum, 2.7 x 10 ³ kg/cm³ Express your answer with the appropriate units. • View Available Hint(s) HA ? Value Units

The quantity called mass density is the mass per unit volume of a substance. Express the following mass densities in SI units. You may want to review (Pages 23 - 27). For help with math skills, you may want to review: Conversion Between m and cm Conversion Between mg.g.kg Aluminum, 2.7 x 10 ³ kg/cm³ Express your answer with the appropriate units. • View Available Hint(s) HA ? Value Units

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter1: Getting Started

Section: Chapter Questions

Problem 35PQ

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The quantity called mass density is the mass per unit volume of a substance. Express the following mass densities in Sl units. You may want to review (Pages 23 - 27) . For help with math skills, you may want to review: Conversion Between m and cm Conversion Between mg.g.kg Alcohol, 0.81 g/cm³ Express your answer with the appropriate units. • View Available Hint(s) HÀ Value Units
For example, dimensional analysis could be used to determine the number of nickels in 3432.35 dollars. 34 dellar • To begin, write down the starting value, 3432.35 dollars. This can also be written as a fraction: Next, convert dollars to cents. This conversion involves a simple conversion factor: delar Note that the "dollar" unit should appear on the bottom of this conversion factor, since "dollars" appears on the top of the starting value. • Finally, convert cents to nickels. This conversion also involves a simple conversion factor. . This time "cents" should be on the bottom of the conversion factor, S centa since it was on top of the previous conversion factor. • Combining these expressions gives us 1 nickel 5 centa 3432.35 dollars ) (100 cente 1 dollar • Finally, cancel units. Since dollars are divided by dollars, and cents are divided by cents, both of these units can be canceled. Multiplying through gives the final result: 1 nickel 5 centis 3432.35 dollars 100 conts 68, 647…
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Part A Evaluate (694 mm)/(43 s) to three significant figures and express answer in SI units using an appropriate prefix. Express your answer to three significant figures and include the appropriate units. • View Available Hint(s) HA (694 mm)/(43 s) = Value Units Submit Previous Answers Part B Evaluate (26 ms)(0.0498 Mm)/(328 mg) to three significant figures. Express your answer in megameters times second per kilogram to three significant figures. • View Available Hint(s) Ην ΑΣφ vec (26 ms)(0.0498 Mm)/(328 mg) = Mm · s/kg
YOUR TEACHER PRACTICE ANOTHER Body surface area is an important piece of medical information because it is a factor in temperature regulation as well as some drug level determinations. The Hosteller formula gives one way of estimating body surface area B, in square meters. The formula uses the welight w, in kilograms, and the height h, in centimeters. The relation is /hw Consider a man who weighs 80 kilograms (a) write a formula for B as a function of h. 60 (b) what height range will resut in a body surface area range from 1.7 to 2 souare meters? Ohsi80.00 cm Ons130.0s cm or h a 160.00 cm O no solution 130.05 cmshs180.00 cm On2130.05 cm
please do it in guss method no other way Solving problems in Physics, we must always use GUESS method.Guess stands for: Guess: G Here you write down what is given in the questionUnknown: U Here you list what you have to calculate, to solve for.Equations: E here you list all the formulas you need to use to solve the problemSubstitution: S This first letter S in the word, you will just substitute what is given in theformula. You do not calculate anything. The calculations will occur at the second S: Solve. Whatis very important here is to carry with you the units of measure in the formula. Not only thenumbers. This is very important, once again.Solve: S The last step, second S, you will solve what you plugged in the first S for Substitution.Very important here is to manipulate the units of measure such that the final units of measureto be proved by your work. This part is very important, since you will allow you to verify thatwhat you do is correct. For example, you calculate for…
Estimates and Order-of- Magnitude Calculations a) Estimate the number of breaths taken during an average human .lifetime Hint: Let we start by guessing that the typical human lifetime is about 70 years. Think about the average number of breaths that a person takes in 1 min. This number varies depending on whether the person is exercising, sleeping, angry, serene, and so forth. To the nearest order of magnitude, we shall choose 10 breaths per minute as our estimate. (This estimate is certainly closer to the true average value than an estimate of 1 breath per minute or 100 breaths per minute.) b) What if the average lifetime were estimated as 80 years instead of 70? ?Would that change our final estimate
ASSESSMENT TIME! Deriction: Solve the following problems using Polya's four-step problem-solving strategy. 1. A baseball team won two out of their last four games. In how many different orders could they have two wins and two losses in your games? ▫Understand the problem ▫Devise a plan ▫Carry out the plan ▫Review the solution 2. Determine the digit 100 places to the right of the decimal point in the decimal representation 7/24. ▫Understand the problem ▫Devise a plan ▫Carry out the plan ▫Review the solution 3. The product of the ages,in year's of three teenagers is 4590. None of the teens have the same age. What are the ages of the teenagers? ▫Understand the problem ▫Devise a plan ▫Carry out the plan ▫Review the solution
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