1 year ago

Why is an absorption spectrum especially useful for astronomers?.

1 answer:

4 0

Answer:

It has dark lines in it that allow astronomers to determine what elements are in the star. red-shifted (shifted toward the red end of the light spectrum).

Explanation:

You might be interested in

Models are frequently used in science to assist in the understanding of complex information. Models can include items like a wor

nordsb [41]

B. Three dimensional I’m almost positive

3 0

2 years ago

a charge of 30. coulombs passes through a 24-ohm resistor in 6.0 seconds. what is the current through the resistor? (1) 1.3 a (3

DochEvi [55]

As I = Q/t (charge/time) the answer is 5a.

30/6 = 5

7 0

3 years ago

Read 2 more answers

The fuzzy cloud around the nucleus is called the

Kamila [148]

It's number three on your worksheet. ;)

6 0

2 years ago

An object is 45 m above the ground when it is dropped. How fast is the object going just before it hits the ground?

leonid [27]

This is a kinematics question.
$v^{2} = v_{0} ^{2} + 2g(y - y_{0}) \\ 
v^{2} = 0 + 2(-9.8)(0 - 45) \\ 
v^{2} = 882 \\ v = \sqrt{882} = 29.7 m/s$

3 0

3 years ago

Identify the two atmospheric layers that contain air as warm as 25◦ C

BigorU [14]

Answer:

troposphere and stratosphere

4 0

2 years ago