Physics, 05.07.2019 04:20 dheydar9377
You are trying to take an image of a particular star with apparent magnitude m=10, and need to figure out how long you will need to expose for with your telescope. your friend tells you that her telescope of diameter 0.07 metres can detect the star in 87 minutes.
how long would it take for you to use your telescope (diameter 0.13 metres) to detect a star with an apparent magnitude m=12? answer in minutes.
Answers: 2
Physics, 21.06.2019 23:50
Any color picture tube and electric field exerts a net force of magnitude 1.68x 10^-13 n on an electron the rest mass of an electron is 9.11 x 10^-13 what is the electron acceleration?
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Physics, 22.06.2019 15:00
What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?
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Physics, 22.06.2019 16:20
How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit
Answers: 2
Physics, 22.06.2019 19:00
The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?
Answers: 1
You are trying to take an image of a particular star with apparent magnitude m=10, and need to figur...
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