Physics, 15.01.2020 21:31 hermesrobles
Which best compares convex and concave mirrors? convex mirrors produce only real images, and concave mirrors produce real and virtual images. convex mirrors produce only virtual images, and concave mirrors produce real and virtual images. concave mirrors produce only real images, and convex mirrors produce real and virtual images. concave mirrors produce only virtual images, and convex mirrors produce real and virtual images.
Answers: 2
Physics, 22.06.2019 19:30
Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).
Answers: 3
Physics, 23.06.2019 00:30
Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? the cloud is extremely hot. the cloud is visible primarily because it reflects light from nearby stars. the cloud is cool and lies between you and a hot star. the cloud is cool and very dense, so that you cannot see any objects that lie behind it.
Answers: 3
Physics, 23.06.2019 03:20
The motion of water in a dam serves human beings by generating electricity as it is a controlled motion. give one example for an uncontrolled motion. what effects could it cause
Answers: 1
Physics, 23.06.2019 09:00
1,990,000,000,000,000,000,000,000,000,000 in scientific notation
Answers: 1
Which best compares convex and concave mirrors? convex mirrors produce only real images, and concav...
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