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Dmitry [639]
3 years ago
11

Which of the following can be determined by studying the spectrum of a star?

Physics
1 answer:
Alex73 [517]3 years ago
3 0
The right answer is 
  
all of the above 
 
good luck

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If the mass of an object is 8 kg and its momentum is -80 kgm/s, what is its velocity?
Dimas [21]

An object's momentum is the product of its mass and its velocity:

p = mv

p is its momentum, m is its mass, and v is its velocity.

Given values:

p = -80kg×m/s

m = 8kg

Plug in these values and solve for v:

-80 = 8v

v = -10m/s

Choice D

4 0
3 years ago
Which of the following has the shortest wavelength? heat radio waves the color red uv radiation
HACTEHA [7]
UV Radiation since it has a higher frequency than the others. The higher the frequency the shorter the wavelength.
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If 2 grams of element X combine with 4 grams of element Y to form compound XY, how many grams of element Y would combine with 11
kykrilka [37]
This is sort of simple.  2 grams of X can combine with 4 grams of Y to form XY.  Y is 2 times the amount of grams in X.  So if there are 11 grams of X there are 22 grams of Y to form XY.  Or you could take 11 divided by 2 is 5.5 and then multiply 4 by 5.5 to get 22.  If this is wrong please tell me I would be very happy to know.
3 0
3 years ago
What is Acceleration?​
earnstyle [38]

Acceleration is the rate of change of velocity

 

To define acceleration, We need to know more about motion.

Motion: This can be defined as the change in position of a body from one point to another. When an object accelerates, it undergoes motion.

<u>Definition</u>

Acceleration can be defined as the rate of change of velocity. The S.I unit of acceleration is meter-per-squared seconds. (m/s²)

The formula of acceleration is

  • a = (v-u)/t................. Equation 1

⇒ Where:

  • a = acceleration
  • u = initial velocity
  • v = final velocity
  • t = time

Hence, Acceleration is the rate of change of velocity

Learn more about acceleration here: brainly.com/question/605631

5 0
2 years ago
Read 2 more answers
Why do most coastal regions have two high tides and two low tides?
Dovator [93]
Because the Earth rotates through two tidal bulges every lunar day.
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3 years ago
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