When galaxies move farther away the wavelength of the light is longer causing the galaxy to shift red but if it moves closer, the wavelength of the light gets smaller causing the galaxy to blue shift. The reason that the wavelength increases or decrease is due to the doppler effect.

8 0

4 years ago

Newton's law of gravitation states that two masses will ______.

spin [16.1K]

Pretty sure the answer is B. Attract each other

4 0

3 years ago

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Help plss .. Two bicyclists are accelerating forward in a straight line, and Biker 1 has less

castortr0y [4]

Explanation:

Remember Newton's Second Law.

$F=ma$

If the force acting on both bikers is the same, we can look at the relationship between acceleration and mass.

If Biker 1 has a mass of 10kg and Biker 2 has a mass of 20kg, and both are being acted upon by a force of 100 N, let's see what that looks like. $100 = 10*a_1 \rightarrow a_1 = 100/10 = 10$

$100 = 20 *a_2 \rightarrow a_2 = 100/20 = 5$

So, given the same force, an object with GREATER mass will have less acceleration.

4 0

3 years ago

Box A has a mass of 35.0kg and Box B has a mass of 20.0kg. What is the tension on

lions [1.4K]

EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEee

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3 years ago