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In the figure below, the change in internal energy of a gas that is taken from A to C along the blue path is +815 J. The work done on the gas along the red path ABC is -445 J.
(a) How much energy must be added to the system by heat as it goes from A through B to C?
(b) If the pressure at point A is five times that of point C, what is the work done on the system in going from C to D?
(c) What is the energy exchanged with the surroundings by heat as the gas goes from C to A along the green path?
(d) If the change in internal energy in going from point D to point A is +515 J, how much energy must be added to the system by heat as it goes from point C to point D?
An airplane travelling at 150 meter per second due west turns around thus it is going due east. Find what is the radius of the turn in meters
A cannon fires a cannonball from the top of a wall at a speed of 23.02 m/s and an angle of 19.67 degrees from the horizontal. What is the horizontal distance from the wall where the fired cannonball hits the ground
The nearest star to Earth is 4.3 light years away. How long does the trip take according to earth observers
Find the pressure difference on an airplane wing where air flows over the upper surface with a speed of 128 m/s, and along the bottom surface with a speed of 100 m/s
Given: G = 6.67259 × 10?11 N m2/kg2 Mimas, a moon of Saturn, has an orbital radius of 1.68 × 108 m and an orbital period of about 23.32 h. find the mass of Saturn
One way to measure on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.17 for a ball to fall freely 11.26.
A goldfish is swimming at 3.20 cm/s toward the front wall of a rectangular aquarium. The index of refraction of water is 1.333. Compute the apparent speed of the goldfish
How many lines are there in the Hydrogen emission spectrum? Why do the lines get closer together as you go bluer? Are there transitions of higher or lower energy that we don't see? How many total transitions are there for hydrogen?
A spark-ignited engine has a compression ratio of 8, an isentropic compression efficiency of 85%. Determine the energy transfer for each of the four components
The length of a rectangualr piece of land is 100 ± 1 m and its width is 50 ± 1 m. What is the perimter of the land
A police radar has an effective range of 1.5km, while a motorist's radar detector has a range of 2.0km. The motorist is going 150km/h in a 50km/h when the radar detector beeps. At what rate must the motorist decelerate to avoid a speeding ticket?
A horizontal force of 159 N pushes a20 kg block up a frictionless incline thatmakes an angle of 35° with the horizontal. What is the normal force that the incline exerts on the block
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