Physics, 19.07.2019 23:50 svarner2001
Rollercoaster car starts at a height of 90 m at point a and is moving at a speed of 20 m/s on a later hill at point c. assuming friction does not affect the motion of a car, what is its height at point c.
Answers: 1
Physics, 22.06.2019 12:30, lanaasad7733
An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg. how much energy e must be supplied to the device? express your answer in joules.
Answers: 1
Physics, 22.06.2019 21:00, emilyrobles
Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer
Answers: 2
Physics, 22.06.2019 22:00, marialuizavalen
Which of these is the best way to manage a natural resource
Answers: 3
Physics, 23.06.2019 01:00, kaziyahf2006
When solid surfaces slide over each other the kind of friction that occurs is called friction
Answers: 2
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