Solutions for COLLEGE PHYSICS - LCPO
Problem 1CQ:
Rub your hands together vigorously. What happens? Discuss the energy transfers and transformations...Problem 2CQ:
Describe the energy transfers and transformations that occur from the time you sit down to breakfast...Problem 3CQ:
According to Table 11.4, cycling at 15 km/h requires less meta-bolic energy than running at 15 km/h....Problem 7CQ:
For most automobiles, the number of miles per gallon decreases as highway speed increases. Fuel...Problem 13CQ:
For Questions 12 through 17, give a specific example of a process that has the energy changes and...Problem 14CQ:
For Questions 12 through 17, give a specific example of a process that has the energy changes and...Problem 15CQ:
For Questions 12 through 17, give a specific example of a process that has the energy changes and...Problem 16CQ:
For Questions 12 through 17, give a specific example of a process that has the energy changes and...Problem 17CQ:
For Questions 12 through 17, give a specific example of a process that has the energy changes and...Problem 18CQ:
For Questions 12 through 17, give a specific example of a process that has the energy changes and...Problem 27CQ:
Electric vehicles increase speed by using an electric motor that draws energy from a battery. When...Problem 28CQ:
When the suns light hits the earth, the temperature rises. Is there an entropy change to accompany...Problem 34MCQ:
A person is walking on level ground at constant speed. What energy transformation is taking place?...Problem 35MCQ:
A person walks 1 km, turns around, and runs back to where he started. Compare the energy used and...Problem 36MCQ:
200 J of heat is added to two gases, each in a sealed container. Gas 1 is in a rigid container that...Problem 38MCQ:
A refrigerators freezer compartment is set at 10C; the kitchen is 24C. What is the theoretical...Problem 1P:
A 10% efficient engine accelerates a 1500 kg car from rest to 15 m/s. How much energy is transferred...Problem 3P:
A typical photovoltaic cell delivers 4.0 103 W of electric energy when illuminated with 1.2 101 W...Problem 7P:
In an average human, basic life processes require energy to be supplied at a steady rate of 100 W....Problem 9P:
An energy bar contains 22 g of carbohydrates. How much energy is this in joules? In calories? In...Problem 13P:
An energy bar contains 22 g of carbohydrates. If the energy bar was his only fuel, how far could a...Problem 17P:
The label on a candy bar says 400 Calories. Assuming a typical efficiency for energy use by the...Problem 19P:
A weightlifter curls a 30 kg bar, raising it each time a distance of 0.60 m. How many times must he...Problem 23P:
Suppose your body was able to use the chemical energy in gasoline. How far could you pedal a bicycle...Problem 28P:
The planet Mercurys surface temperature varies from 700 K during the day to 90 K at night. What are...Problem 29P:
A piece of metal at 100C has its Celsius temperature doubled. By what factor does its kelvin...Problem 31P:
500 J of work are done on a system in a process that decreases the systems thermal energy by 200 J....Problem 33P:
600 J of heat energy are transferred to a system that does 400 J of work. By how much does the...Problem 35P:
10 J of heat are removed from a gas sample while it is being compressed by a piston that does 20 J...Problem 36P:
A heat engine extracts 55 kJ from the hot reservoir and exhausts 40 kJ into the cold reservoir. What...Problem 37P:
A heat engine does 20 J of work while exhausting 30 J of waste heat. What is the engines efficiency?Problem 38P:
A power plant running at 35% efficiency generates 300 MW of electric power. At what rate (in MW) is...Problem 39P:
A heat engine operating between energy reservoirs at 20C and 600C has 30% of the maximum possible...Problem 40P:
A newly proposed device for generating electricity from the sun is a heat engine in which the hot...Problem 45P:
A refrigerator takes in 20 J of work and exhausts 50 J of heat. What is the refrigerators...Problem 46P:
Air conditioners are rated by their coefficient of performance at 80F inside temperature and 95F...Problem 47P:
50 J of work are done on a refrigerator with a coefficient of performance of 4.0. How much heat is...Problem 49P:
Find the maximum possible coefficient of performance for a heat pump used to heat a house in a...Problem 57GP:
The record time for a Tour de France cyclist to ascend the famed 1100-m-high Alpe dHuez was 37.5...Problem 58GP:
Championship swimmers take about 22 s and about 30 arm strokes to move through the water in a 50 m...Problem 59GP:
A 68 kg hiker walks at 5.0 km/h up a 7% slope. What is the necessary metabolic power? Hint: You can...Problem 60GP:
To make your workouts more productive, you can get an electrical generator that you drive with the...Problem 61GP:
The resistance of an exercise bike is often provided by a generator; that is, the energy that you...Problem 64GP:
An engine does 10 J of work and exhausts 15 J of waste heat. a. What is the engine's efficiency? b....Problem 65GP:
An engine operating at maximum theoretical efficiency whose cold-reservoir temperature is 7C is 40%...Problem 66GP:
An engineer claims to have measured the characteristics of a heat engine that takes in 100 J of...Problem 67GP:
A typical coal-fired power plant burns 300 metric tons of coal every hour to generate 2.7 106 MJ of...Problem 69GP:
Air conditioners sold in the United States are given a seasonal energy-efficiency ratio (SEER)...Problem 70GP:
The surface waters of tropical oceans are at a temperature of 27C while water at a depth of 1200 m...Browse All Chapters of This Textbook
Chapter 1 - Representing MotionChapter 2 - Motion In One DimensionChapter 3 - Vectors And Motion In Two DimensionsChapter 4 - Forces And Newton's Laws Of MotionChapter 5 - Applying Newton's LawsChapter 6 - Circular Motion, Orbits, And GravityChapter 7 - Rotational MotionChapter 8 - Equilibrium And ElasticityChapter 9 - MomentumChapter 10 - Energy And Work
Chapter 11 - Using EnergyChapter 12 - Thermal Properties Of MatterChapter 13 - FluidsChapter 14 - OscillationsChapter 15 - Traveling Waves And SoundChapter 16 - Superposition And Standing WavesChapter 17 - Wave OpticsChapter 18 - Ray OpticsChapter 19 - Optical InstrumentsChapter 20 - Electric Fields And ForcesChapter 21 - Electric PotentialChapter 22 - Current And ResistanceChapter 23 - CircuitsChapter 24 - Magnetic Fields And ForcesChapter 25 - Em Induction And Em WavesChapter 26 - Ac ElectricityChapter 27 - RelativityChapter 28 - Quantum PhysicsChapter 29 - Atoms And MoleculesChapter 30 - Nuclear PhysicsChapter P.1 - Summary Force And MotionChapter P.2 - Summary Conservation LawsChapter P.3 - Summary Properties Of MatterChapter P.4 - Summary Oscillations And WavesChapter P.5 - Summary OpticsChapter P.6 - Summary Electricity And MagnetismChapter P.7 - Summary Modern Physics
Sample Solutions for this Textbook
We offer sample solutions for COLLEGE PHYSICS - LCPO homework problems. See examples below:
Chapter 1, Problem 1CQChapter 2, Problem 1CQChapter 3, Problem 1CQChapter 4, Problem 1CQChapter 5, Problem 1CQChapter 5, Problem 19PChapter 6, Problem 1CQChapter 7, Problem 1CQGiven data: Refer to the Figure Q8.1 in the textbook for the force that acts at the tip of the rod....
Given data: A person bowls with a 10 pound ball. The person throws the ball with a speed of 10 mph....Chapter 10, Problem 1CQChapter 11, Problem 1CQChapter 12, Problem 1CQChapter 13, Problem 1CQGiven data: Pendulum is pulled back from its position by 10°, and its restoring force is 1.0 N....Chapter 15, Problem 1CQChapter 16, Problem 1CQChapter 17, Problem 1CQExplanation: During the solar eclipse, the moon comes in between the sun and the Earth. The rays...Chapter 19, Problem 1CQChapter 20, Problem 1CQChapter 21, Problem 1CQGiven data: Refer to the Figure Q22.2 in the textbook for required data. Explanation: In the Figure...Refer to FIGURE Q23.1 in the textbook. Consider I is the total current in the circuit, R is the...Chapter 24, Problem 1CQFormula used: Consider the equation for induced current. I=εR (1) Here, ε is the emf due to motion...Chapter 26, Problem 1CQExplanation: If the case considered is that the airplane is moving with a constant velocity such...Given info: The photon energy of an x-ray beam is increasing. Explanation: Write the expression for...Explanation: Emission spectrum of the elements shows colors due to the electrons excited by...Explanation: Consider the expression for atomic mass. A=Z+N Here, Z is the number of protons and N...
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