Physics, 25.07.2019 22:40 hcpsharrissy2952
The light from many stars can be seen from earth. but there is a time delay between the time the light is emitted from the star and when we see it here on earth. which of the following statements best explains why there is a delay? a. the stars light is not bright enough to reach earth immediately b. stars twinkle so they give off light at regular intervals. c. earths atmoshpere is to thick for light to reach the surface as soon as it is emitted d. stars are light-years away from earth, so light takes time to reach our planet
Answers: 1
Physics, 21.06.2019 20:30, dthompson365
Ahorizontal wire is tied to supports at each end and vibrates in its second-overtone standing wave. the tension in the wire is 5.00 n, and the node-to-node distance in the standing wave is 6.28 cm. (a) what is the length of the wire? (b) a point at an anti- node of the standing wave on the wire travels from its maximum upward displacement to its maximum downward displacement in 8.40 ms. what is the wire's mass?
Answers: 3
Physics, 23.06.2019 00:20, tacowilliam20
The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 × 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g
Answers: 2
The light from many stars can be seen from earth. but there is a time delay between the time the lig...
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