College Physics: A Strategic Approach (4th Edition)
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The kinetic energy cannot be the same as the total... more
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Crane 1 is not more efficient than Crane 2 because... more
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Typical efficiency of humans is . So, a maximum of... more
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Sample 1 has twice the number of atoms as in ... more
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The radiator is at a higher temperature. So, if ... more
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If the heat reservoir temperature increases, it ... more
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Increasing the temperature inside the refrigerator... more
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An electric heater raises the temperature. So, it ... more
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Hands feel warmerMechanical energy is converted ... more
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Chemical energy is converted to kinetic and ... more
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The frictional force on the cycle tires is less ... more
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The main change in energy is the gravitational ... more
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Because the metabolic power of pronghorn is very ... more
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Around of the energy produced is converted into ... more
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Drag force increases with the increase in the ... more
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Elastic strain energy stored provides the excess ... more
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Yes, mechanical energy is transformed into thermal... more
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Friction heats the flour ; When the wheat is being... more
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Almost of energy will go from the rod to the ice ... more
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The 1 kg block has more thermal energy than the 3 ... more
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Water bottle cooling inside a refrigerator. ; When... more
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Compression of gas adiabatically ; The first law ... more
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Expansion of gas in an adiabatic process ; When ... more
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Heating a sealed cylinder with a piston, and the ... more
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Cooling a sealed cylinder with a piston lid, and ... more
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The isolated gas is heated and allowed to expand ... more
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The speed of molecules is directly proportional to... more
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A sudden adiabatic compression increases the ... more
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Temperature will rise because work is done on the ... more
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is positive, and is negative. ; When the rubber ... more
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The heat taken by the heater is from the engine's ... more
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In the evening, a warmer day warms the air in the ... more
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Exchange of heat becomes easier for the ... more
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Power consumption by the heat exchanger, which is ... more
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The energy loss in the form of heat is an ... more
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Yes, there is change in entropy of the universe. ... more
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No, it does not violate the 2nd law of ... more
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Living creatures have efficiency less than 100%. ... more
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No, free energy decreases. ; A sealed and ... more
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Calculate and check the area of the plate required... more
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The required metabolic power is 150 W , which ... more
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Chemical energy is transformed into thermal energy... more
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The energy used in both segments is the same.But ... more
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According to the first law of thermodynamics, .So... more
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If QC is 100 J , the following relation must be ... more
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If Win = 0.89 J , the following relation must be ... more
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1.6875 MJ ; Efficiency is defined as the ratio of ... more
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The efficiency of the fuel G engine is 10 % .The ... more
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3.33 % ; Efficiency is the ratio of energy used E1... more
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1.2 GW ; The volume of water ejected per second is... more
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8 LEDsTotal power is 8 W ; Efficiency is the ratio... more
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3.96 MW ; Calculate the kinetic energy of the wind... more
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2062 Cal ; The human body requires 100 W metabolic... more
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79% ; 1 mole of glucose weighs 180 g and 1 g of ... more
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In joules: In calories: In Calories: ; of glucose ... more
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E1 = 1.38 MJ E2 = 1.37 MJ ; The speed of person A... more
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489.6 Cal ; Metabolic power It depicts that a ... more
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E1 = 1.38 MJE2 = 0.576 MJ ; In running at 15 km/h... more
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1.37 km ; 1 g carbohydrate contains 17 kJ . Thus, ... more
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1.965 hours ; Let the metabolic power of a swimmer... more
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19.6 % ; Let the displacement be and force be .... more
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713 m ; The energy in the candy bar is 400 Cal . ... more
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40.77 % ; Let the mass of jellyfish be , the ... more
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About 1786 times. ; Energy contained in one slice ... more
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28 ; Calculate the time taken to cover with a ... more
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306 m ; If 1 g fuel G contains 44 kJ energy, the ... more
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; The time taken by starling to cover with a ... more
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1.17 g ; The metabolic power of bird is 12 J/s . ... more
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The specific metabolic power of starling is ... more
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and ; Temperature in Kelvin 4.2 K is converted to ... more
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In degree Celsius: to In degree Fahrenheit: to... more
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1.27 ; The initial temperature is .When ... more
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; The relation between Celsius to Fahrenheit is ... more
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-700 J ; The thermal energy of the system is ... more
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432 kJ ; The work done W is equal to the product ... more
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200 J ; The first law of thermodynamics states ... more
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Work is done on the system, and hence W is ... more
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10 Jincrease ; The heat removed from the system, .... more
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40 % ; The work done Wout by a heat engine is ... more
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557.14 MW ; The ratio of the work done by the heat... more
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5000 J ; Convert the temperatures of the hot and ... more
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; Convert the temperature of the cold reservoir... more
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; The temperature of the hot reservoir is .The ... more
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95625 ; The ratio of the work done by the heat ... more
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1.5 ; The work required to remove QC amount of ... more
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35.97 approximately ; The outside temperature, i.e... more
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6.325 ; The temperature outside (cold reservoir) ... more
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13.65 ; The temperature of outside air is and ... more
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4.69 kW ; The efficiency of the human body is 25... more
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Dark blue color indicates a healthy ecosystem. ; ... more
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1.1 ; To find the energy required to walk for , ... more
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639 W ; To find the angle, equate the expression ... more
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233.34 K ; To find the temperature of the hot ... more
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Yes, 2 ; To find the efficiency, substitute work W... more
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126 ; It is known that, the theoretical maximum ... more
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8 % ; The temperature of the surface of the ocean ... more
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As the speed and energy used are directly ... more
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As the energy consumption is almost constant for ... more
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The oxygen uptake by the running human at 4 m/s is... more
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At speed 3 m/s human use power while at the ... more
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At speed 3m/s human use while at the same speed a... more
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For the energy value to be 3 MJ , the metabolic ... more
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Let the mass of the dog be, ,with a force, and ... more
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Power P can be defined as product of force F and ... more
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Because heat is transferred to the surrounding, so... more
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Overall decrease in entropy is the violation of ... more
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No it is an irreversible process,so this option is... more
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Total entropy of an isolated system will always ... more
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There is no energy absorbed, it is converted in ... more
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The height value can be 2 m ,only if the spring ... more
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The height value can be 8 m ,only if the spring ... more
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The combined mass of the stick P and rider is, m... more
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Reduce the force on the rider and give a lower ... more
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Ball is motionless on the floor so kinetic energy ... more
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Force will be greater if the time spent by the ... more
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7 m/s ; Just before the ball hits the floor, the ... more
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According to the law of conservation of momentum... more
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For the acceleration value to be 10 g ,the ... more
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The value of force can be ,for the water of mass... more
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7 % ; Let the mass of squid be, , mass of ejected ... more
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The change in momentum can be 1.4 kgm/s only if ... more
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Momentum is given by the equation where m is the ... more
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As the total kinetic energy before and after ... more
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The efficiency can be 0.54 if the value of kinetic... more
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The average power can be only if the time period ... more
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0.957 hp ; To find the force, use the relation , ... more
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Pair will move in west direction with speed 0.21 m... more
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