Answer:
There is more space between our galaxy and distant galaxies, and the whole universe is expanding. ... Red shift shows that the galaxies are moving away from each other. Why is the cosmic background radiation uneven in some places? Matter was not spread out evenly in the early universe.
Answer:
matter just wasn't spread out evenly in our universe after 400,000 years.
Explanation:the cmbr picture was as it was 400,000 years after the big bang it still looks the same as it does today though.when early galaxy's started to form they spread the radiation out unevenly with there gravity.
Answer: The correct answer is False.
Explanation:
Scientists use the Doppler effect to understand the universe by determining the motion of the object.
Doppler effect: It is the phenomenon in which there is relative motion between the source and listener or source or observer.
Red shift and blue shift can be explained by using the concept of Doppler effect.
From red shift and blue shift, one can conclude that galaxies or stars are moving towards us or going away from us.
The light is shifted to longer wavelength which is red in the case of red shift. The light is shifted to shorter wavelength which is blue in the case of blue shift.
Therefore, "the approximate size of a galaxy can be measured by using the Doppler effect", the given statement is false.
B. Sodium and potassium
C. Magnesium and zinc
D. Selenium and iron
C) 100N
Given:
Mass of the object = 10kg
Acceleration due to gravity = 9.81m/s²
Weight is a measure of the force of gravity pulling down on an object. It depends on the object's mass and the acceleration due to gravity, which is 9.8 m/s² on Earth.
Formula for calculating the Weight of an object is expressed as;
Weight = mass × acceleration due to gravity
On substituting the values in the above formula:
Weight = 10×9.81
Weight = 98.1N
Hence, the approximate weight of the object is 100N.
Therefore, the correct option is option C.
Learn more:
Answer:
C) 100N
Explanation:
Formula for calculating the Weight of an object is expressed as;
Weight = mass × acceleration due to gravity
Given
Mass of the object = 10kg
Acceleration due to gravity = 9.81m/s²
Substitute into the formula above
Weight = 10×9.81
Weight = 98.1N
Hence the approximate weight of the object is 100N
B Primary succession begins with bare rocks
C Secondary succession begins with mossed and lichens
D Secondary succession include frequent fires
Answer:
b
Explanation: