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A heat pump operates between reservoirs at 300 K (inside the house) and 252 K (outside). It is not a reversible heat pump; it only pumps 68% of the maximum possible heat into the house. How much work must be done to "pump" 6910 J of heat energy into the house?
an infinite line charge of uniform linear charge density -1.1 cm lies parallel to the y axis at x -1 m. a point
You are flying to Chicago for a weekend away from the books. In your last physics class, you learned that the airflow over the wings of the plane creates a lift force , which acts perpendicular to the wings.
Two identical marbles of mass m and radius R sit in a glass beaker as shown below. Thediameter of the beaker is 3R. Express your answers in terms of m, g and numericalconstants. Hint: Draw FBDs of each marble starting with the upper marble.
1 for an experiment a laser which emits light at a single wavelength a monochromatic source was used. how would the
There is evidence that elephants communicate via infrasound,generating rumbling vocalizations as low as 14 hz that can travelup to 10 km. The intensity level of these sounds can reach98 dB, measured a distance of 4.5 m from the source.
conducting objects can be chrome-plated by immersing them in an electrolytic bath having positive chromium ions in
A child of mass 60.0 kilogram is rescued from a hotel fire by leaping into a firefighters' net. Find the average force on the net due to the child during the interval
A ball is tied to the top of a pole by a string. The ball rotates at 5.0m/s around the pole in a horizontal circle of radius 1.0m. What is the angle between the string and pole
Use the least-squares line computed in part (a) to predict the population in an area of 5000 m2 . Compute the least-square line for predicting ln y from ln x .
In which situation shown in Figure will the electromagnetic wave be more successful in inducing a current in the loop? Explain.
NASA's Cassini mission to Saturn released a probe on December 25, 2004, that landed on the Saturnian moon Titan on January 14, How many revolutions had Huygens completed when it was 130 yards from the mother ship
If an atom has 104 electrons, 157 neutrons, and 104 protons, evaluate what is the approximate mass? Find what is the name of this element
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