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Physics, 22.06.2019 21:10
Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. intensity c. wavelength d. brightness
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Explain how a step-down transformer makes electricity safe for use in homes
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Physics, 23.06.2019 03:30
What can change the speed of sound as it travels through the ocean? a. salinity only b. density and salinity c. salinity and distance from land d. density and distance from land
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Physics, 23.06.2019 19:00
Determine which heat transfers below are due to the process of conduction. i) you walk barefoot on the hot street and it burns your toes. ii) when you get into a car with hot black leather in the middle of the summer and your skin starts to get burned. iii) a flame heats the air inside a hot air balloon and the balloon rises. iv) a boy sits to the side of a campfire. he is 10 feet away, but still feels warm. a) i and ii b) iii and iv c) i, ii, and iv d) ii, iii, and iv
Answers: 1
Calculate the force of attraction between a ca2+ and an o2- ion whose centers are separated by a dis...
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