Physics, 25.06.2019 17:30 wolffee895
Color surface temperature range red < 3,500 k yellow 3,500 - 7,500 k blue 10,000 - 60,000 k the chart above shows how a star's temperature relates to its color. rigel is a blue star, betelgeuse is a red star, and the sun is a yellow star. how do the temperatures of these stars compare? a. the three stars have different colors but the same temperature. b. the sun is hotter than betelgeuse and cooler than rigel. c. betelgeuse is hotter than the sun and cooler than rigel. d. rigel is hotter than betelgeuse and cooler than the sun.
Answers: 3
Physics, 21.06.2019 22:20
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage
Answers: 2
Physics, 22.06.2019 11:00
What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?
Answers: 1
Physics, 22.06.2019 14:40
Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion
Answers: 2
Physics, 22.06.2019 15:30
This is the number of complete movements of a wave per second.
Answers: 1
Color surface temperature range red < 3,500 k yellow 3,500 - 7,500 k blue 10,000 - 60,000 k the...
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