All of the following are reasons why astronomers have difficulty looking at distant stars except: a. some stars are so far away, even the best telescopes are not powerful enough. b. they don't understand how redshift affects stars. c. there is a lot of gas and dust in the atmosphere that distorts the light coming from stars. d. there is a lot of light pollution on earth.
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Physics, 22.06.2019 17:40
The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.
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Physics, 23.06.2019 01:30
If the pressure in a gas is doubled while its volume is held constant. true or false
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Physics, 23.06.2019 02:30
An airplane is flying with a velocity of 240 m/s at an angle of 30.0∘ with the horizontal, as the drawing shows. when the altitude of the plane is 2.4km,a flare is released from the plane. the flare hits the target on the ground. what is the angle θ?
Answers: 3
All of the following are reasons why astronomers have difficulty looking at distant stars except: a...
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