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 17:00
How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?
Answers: 1
Physics, 21.06.2019 22:30
An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
Answers: 1
Physics, 22.06.2019 02:30
Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.
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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