COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 1, Problem 47QAP
To determine
The diameter of a roll of
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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
Aluminum, 2.7 x 10 ³ kg/cm³
Express your answer with the appropriate units.
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Vector A has a magnitude of 32 units and points in the positive y direction. When vector B is added to A, the resultant vector A + B points in the negative y direction with a magnitude of 13 units. Find the magnitude and direction of B.
magnitude
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direction
• counterclockwise from the +x-axis
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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
Chapter 1 Solutions
COLLEGE PHYSICS
Ch. 1 - Prob. 1QAPCh. 1 - Prob. 2QAPCh. 1 - Prob. 3QAPCh. 1 - Prob. 4QAPCh. 1 - Prob. 5QAPCh. 1 - Prob. 6QAPCh. 1 - Prob. 7QAPCh. 1 - Prob. 8QAPCh. 1 - Prob. 9QAPCh. 1 - Prob. 10QAP
Ch. 1 - Prob. 11QAPCh. 1 - Prob. 12QAPCh. 1 - Prob. 13QAPCh. 1 - Prob. 14QAPCh. 1 - Prob. 15QAPCh. 1 - Prob. 16QAPCh. 1 - Prob. 17QAPCh. 1 - Prob. 18QAPCh. 1 - Prob. 19QAPCh. 1 - Prob. 20QAPCh. 1 - Prob. 21QAPCh. 1 - Prob. 22QAPCh. 1 - Prob. 23QAPCh. 1 - Prob. 24QAPCh. 1 - Prob. 25QAPCh. 1 - Prob. 26QAPCh. 1 - Prob. 27QAPCh. 1 - Prob. 28QAPCh. 1 - Prob. 29QAPCh. 1 - Prob. 30QAPCh. 1 - Prob. 31QAPCh. 1 - Prob. 32QAPCh. 1 - Prob. 33QAPCh. 1 - Prob. 34QAPCh. 1 - Prob. 35QAPCh. 1 - Prob. 36QAPCh. 1 - Prob. 37QAPCh. 1 - Prob. 38QAPCh. 1 - Prob. 39QAPCh. 1 - Prob. 40QAPCh. 1 - Prob. 41QAPCh. 1 - Prob. 42QAPCh. 1 - Prob. 43QAPCh. 1 - Prob. 44QAPCh. 1 - Prob. 45QAPCh. 1 - Prob. 46QAPCh. 1 - Prob. 47QAPCh. 1 - Prob. 48QAPCh. 1 - Prob. 49QAPCh. 1 - Prob. 50QAPCh. 1 - Prob. 51QAPCh. 1 - Prob. 52QAPCh. 1 - Prob. 53QAPCh. 1 - Prob. 54QAPCh. 1 - Prob. 55QAP
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- (a) One of lire fundamental laws of motion states that the acceleration of an object is directly proportional to the resultant force on it and inversely proportional to its mass. If the proportionality constant is defined to have no dimensions, determine the dimensions of force. (b) The newton is the SI unit of force. According to the results for (a), how can you express a force having units of newtons by using the fundamental units of mass, length, and time?arrow_forwardYou can always add two numbers that have the same units. However, you cannot always add two numbers that have the same dimensions. Explain why not, and include an example in your explanationarrow_forward•11 For about 10 years after the French Revolution, the French government attempted to base measures of time on multiples of ten: One week consisted of 10 days, one day consisted of 10 hours, one hour consisted of 100 minutes, and one minute consisted of 100 seconds. What are the ratios of (a) the French decimal week to the standard week and (b) the French decimal second to the standard second?arrow_forward
- • A balloon is being inflated with a water supply of 0.6m³/s (shown as figure). Find the rate of growth of the radius at the instant when R = 0.5m. V₁- R(t) dR dt AR VIZ A₁ 0.5 m (b) VRarrow_forwardA student sees a newspaper ad for an apartment that has 2330 square feet (ft²) of floor space. How many square meters of area are there? Number i Units ♥arrow_forwardQUESTION 7 A farmer wants to fence off his four-sided plot of flat land. He measures the first three sides shown as A B. and C in Figure A, and then correctly calculates the length and orientation of the fourth side 0 What is the length? Side length orientation A 47 -75 B 248 106 C 3.02 161arrow_forward
- Can dimensional analysis determine whether the area of a circle ispr2 or 2pr2? Explainarrow_forwardASSESSMENT 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 solutionarrow_forwardProblem 16. Consider the physical quantities m, s, v, a, and t with dimensions [m] = M, [s] = L, [v] = LT-¹ [a] = LT-², and [t] = T. Assuming each of the following equations is dimensionally consistent, find the dimension of the quantity on the left-hand side of the equation. • F = ma: • K = 0.5mv²: • p = mv: • W = mas: • L=mur:arrow_forward
- 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…arrow_forwardIf an equation is not dimensionally correct, does that mean that the equation cannot be true? a. yes b. noarrow_forwardMust two quantities have the same dimensions if you are subtracting them? no yesarrow_forward
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