CONCEPTUAL INTEGRATED SCIENCE (PEARSON+
3rd Edition
ISBN: 2818440059230
Author: Hewitt
Publisher: PEARSON+
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Chapter 12, Problem 95TE
To determine
To state:
The reason as to why breathing a mixture of helium and oxygen rather than air helps divers in getting bends.
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Nature of Resistance
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Ohm's Law, Energy and Power
Kirchhoff's Law
• Maxwell's Mesh Analysis
1. A coil of copper wire (p = 10.37 2-cmil/ft) has a length of 600 ft. What is the length of an aluminum conductor
(p 17 cmil/ft), if its cross-sectional area and resistance are the same as those of the copper coil? (Hint: Look
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2. The copper field winding of an electric machine has a resistance of 46 at temperature of 22°C. What will be
its resistance at 75°C? (Use do = 0.00427 /°C for copper) (1 pt)
3. The resistivity of a copper rod 50 ft long and 0.25 inch in diameter is 1.76 μ at 20°C. What is its resistance at -
20°C? (1 pt)
4. When two resistors A and B are connected in series, the total resistance is 36 2. When connected in parallel, the
total resistance is 8 Q. What is the ratio of the resistance RA to resistance RB? Assume RA < RB. (1 pt)
5. The…
Chapter 12 Solutions
CONCEPTUAL INTEGRATED SCIENCE (PEARSON+
Ch. 12 - How many electrons can occupy the first shell? How...Ch. 12 - Which electrons are represented by an electron-dot...Ch. 12 - Prob. 3RCCCh. 12 - How does an ion differ from an atom?Ch. 12 - To become a negative ion, does an atom lose or...Ch. 12 - Prob. 6RCCCh. 12 - Prob. 7RCCCh. 12 - Prob. 8RCCCh. 12 - Prob. 9RCCCh. 12 - Prob. 10RCC
Ch. 12 - Prob. 11RCCCh. 12 - Prob. 12RCCCh. 12 - Why do nonpolar substances boil at relatively low...Ch. 12 - Which has a greater degree of symmetry-a polar...Ch. 12 - Why dont oil and water mix?Ch. 12 - Prob. 16RCCCh. 12 - What is a hydrogen bond?Ch. 12 - Are induced dipoles permanent?Ch. 12 - What happens to the volume of a sugar solution as...Ch. 12 - Prob. 20RCCCh. 12 - Is concentration typically given with the volume...Ch. 12 - Why does the solubility of a gas solute in a...Ch. 12 - Why do sugar crystals dissolve faster when...Ch. 12 - Is sugar a polar or nonpolar substance?Ch. 12 - Do metals more readily gain or lose electrons?Ch. 12 - What is an alloy?Ch. 12 - What is a native metal?Ch. 12 - Prob. 28TISCh. 12 - Prob. 29TISCh. 12 - How is a solution different from a suspension?Ch. 12 - Prob. 36TCCh. 12 - Prob. 37TCCh. 12 - Rank the following in order of increasing...Ch. 12 - Rank the following in order of decreasing boiling...Ch. 12 - Rank these solutions in order of increasing...Ch. 12 - Rank the following compounds in order of...Ch. 12 - Prob. 42TSCh. 12 - Prob. 43TSCh. 12 - Prob. 44TSCh. 12 - How much sodium chloride, in grams, is needed to...Ch. 12 - If water is added to 1mole of sodium chloride in a...Ch. 12 - Prob. 47TECh. 12 - Prob. 48TECh. 12 - How many more electrons can fit within the valence...Ch. 12 - Prob. 50TECh. 12 - What happens when hydrogens electron gets close to...Ch. 12 - Why does an atom with few valence electrons tend...Ch. 12 - Why it is so easy for a magnesium atom to lose two...Ch. 12 - Why doesnt the neon atom tend to lose or gain any...Ch. 12 - Sulfuric acid, H2SO4, loses two protons to form...Ch. 12 - Prob. 56TECh. 12 - Which should be more difficult to pull apart: a...Ch. 12 - Given that the total number of atoms on our planet...Ch. 12 - Prob. 59TECh. 12 - Two fluorine atoms join together to form a...Ch. 12 - How are metallic bonds similar to ionic bonds? How...Ch. 12 - What drives an atom to form a covalent bond: its...Ch. 12 - Atoms of nonmetallic elements form covalent bonds,...Ch. 12 - Prob. 64TECh. 12 - Prob. 65TECh. 12 - Prob. 66TECh. 12 - In each molecule, which atom carries the greater...Ch. 12 - Which is more polar: a sulfur-bromineS-Br bond or...Ch. 12 - True or False: The greater the nuclear charge of...Ch. 12 - True or False: The more shells in an atom, the...Ch. 12 - Water, H2O, and methane, CH4, have about the same...Ch. 12 - Circle the molecule from each pair that should...Ch. 12 - Three kids sitting equally apart around a table...Ch. 12 - Why is the oxygen atom of a water molecule...Ch. 12 - Look to the molecules listed in Table 12.2. How...Ch. 12 - Which is stronger: the covalent bond that holds...Ch. 12 - The charges with sodium chloride are all...Ch. 12 - Prob. 78TECh. 12 - Prob. 79TECh. 12 - Why is calcium fluoride, CaF2, a high melting...Ch. 12 - Of the two structures shown here, one is a typical...Ch. 12 - Mixtures can be separated into their components by...Ch. 12 - Why cant the elements of a compound be separated...Ch. 12 - Many dry cereals are fortified with iron, which is...Ch. 12 - Classify the following as element, compound, or...Ch. 12 - Which of the following boxes best represents a...Ch. 12 - Which is more dense: air saturated with water...Ch. 12 - How many sugar molecules are there in a 2M sugar...Ch. 12 - Prob. 89TECh. 12 - Which should weigh more: 100mL of fresh water or...Ch. 12 - Prob. 91TECh. 12 - The boiling point of 1, 4-butanediol is 230C....Ch. 12 - Based on atomic size, which would you expect to be...Ch. 12 - If nitrogen, N2, were pumped into your lungs at...Ch. 12 - Prob. 95TECh. 12 - Account for the observation that ethanol, C2H5OH,...Ch. 12 - At 10C, which is more concentrated: a saturated...Ch. 12 - Why is rain or snow called precipitation?Ch. 12 - Hydrogen chloride HCl is a gas at room...Ch. 12 - Some bottled water is now advertised as containing...Ch. 12 - Two plastic bottles of fresh seltzer water are...Ch. 12 - Would you expect to find more dissolved oxygen in...Ch. 12 - What should be done with mining pits after all...Ch. 12 - What are some of the obstacles people face when...Ch. 12 - Oxygen, O2, dissolves quite well within a class of...Ch. 12 - Prob. 1RATCh. 12 - Prob. 2RATCh. 12 - Why are ores so valuable? a They are sources of...Ch. 12 - In terms of the periodic table, is there an abrupt...Ch. 12 - When nitrogen and fluorine combine to form a...Ch. 12 - Prob. 6RATCh. 12 - Someone argues that you shouldnt drink tap water...Ch. 12 - Prob. 8RATCh. 12 - Fish dont live very longer in water that has just...Ch. 12 - Prob. 10RAT
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- 2. Two equally strong individuals, wearing exactly the same shoes decide to do a tug of war. The only difference is individual A is 2.5 meters tall and individual B is 1.5 meter tall. Who is more likely to win the tug of war?arrow_forward6. A car drives at steady speed around a perfectly circular track. (a) The car's acceleration is zero. (b) The net force on the car is zero. (c) Both the acceleration and net force on the car point outward. (d) Both the acceleration and net force on the car point inward. (e) If there is no friction, the acceleration is outward.arrow_forward9. A spring has a force constant of 100 N/m and an unstretched length of 0.07 m. One end is attached to a post that is free to rotate in the center of a smooth. table, as shown in the top view in the figure below. The other end is attached to a 1kg disc moving in uniform circular motion on the table, which stretches the spring by 0.03 m. Friction is negligible. What is the centripetal force on the disc? Top View (a) 0.3 N (b) 3.0 N (c) 10 N (d) 300 N (e) 1000 Narrow_forward
- 4. A child has a ball on the end of a cord, and whirls the ball in a vertical circle. Assuming the speed of the ball is constant (an approximation), when would the tension in the cord be greatest? (a) At the top of the circle. (b) At the bottom of the circle. (c) A little after the bottom of the circle when the ball is climbing. (d) A little before the bottom of the circle when the ball is descending quickly. (e) Nowhere; the cord is pulled the same amount at all points.arrow_forward3. In a rotating vertical cylinder (Rotor-ride) a rider finds herself pressed with her back to the rotating wall. Which is the correct free-body diagram for her? (a) (b) (c) (d) (e)arrow_forward8. A roller coaster rounds the bottom of a circular loop at a nearly constant speed. At this point the net force on the coaster cart is (a) zero. (b) directed upward. (c) directed downward. (d) Cannot tell without knowing the exact speed.arrow_forward
- 5. While driving fast around a sharp right turn, you find yourself pressing against the left car door. What is happening? (a) Centrifugal force is pushing you into the door. (b) The door is exerting a rightward force on you. (c) Both of the above. (d) Neither of the above.arrow_forward7. You are flung sideways when your car travels around a sharp curve because (a) you tend to continue moving in a straight line. (b) there is a centrifugal force acting on you. (c) the car exerts an outward force on you. (d) of gravity.arrow_forward1. A 50-N crate sits on a horizontal floor where the coefficient of static friction between the crate and the floor is 0.50. A 20-N force is applied to the crate acting to the right. What is the resulting static friction force acting on the crate? (a) 20 N to the right. (b) 20 N to the left. (c) 25 N to the right. (d) 25 N to the left. (e) None of the above; the crate starts to move.arrow_forward
- 3. The problem that shall not be named. m A (a) A block of mass m = 1 kg, sits on an incline that has an angle 0. Find the coefficient of static friction by analyzing the system at imminent motion. (hint: static friction will equal the maximum value) (b) A block of mass m = 1kg made of a different material, slides down an incline that has an angle 0 = 45 degrees. If the coefficient of kinetic friction increases is μ = 0.5 what is the acceleration of the block? karrow_forward2. Which of the following point towards the center of the circle in uniform circular motion? (a) Acceleration. (b) Velocity, acceleration, net force. (c) Velocity, acceleration. (d) Velocity, net force. (e) Acceleration, net force.arrow_forwardProblem 1. (20 pts) The third and fourth stages of a rocket are coastin in space with a velocity of 18 000 km/h when a smal explosive charge between the stages separate them. Immediately after separation the fourth stag has increased its velocity to v4 = 18 060 km/h. Wha is the corresponding velocity v3 of the third stage At separation the third and fourth stages hav masses of 400 and 200 kg, respectively. 3rd stage 4th stagearrow_forward
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