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dezoksy [38]
4 years ago
10

Describe what causes day and night

Physics
2 answers:
nadya68 [22]4 years ago
7 0
The earth spins around the sun. <span>The side facing away is cooler and darker, and experiences </span>night<span>.</span>
Nana76 [90]4 years ago
7 0
The earths rotating axis causes different parts of the earth to be facing away from the sun therefore causing sunlight in some areas of the earth and night time in other areas
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What is the main function of a cell
Andre45 [30]

Answer:

they provide structure and support, facilitate growth through mitosis, allow passive and active transport, produce energy, create metabolic reactions and aid in reproduction.

Explanation:

they provide six main functions.

5 0
3 years ago
If the car speeds up at a steady 1.6 m/s2 , how long after starting is the magnitude of its centripetal acceleration equal to th
Rufina [12.5K]
Based on internet sources, <span>the basic formulas are: v^2/r = (at)^2/r = a ==> at^2 = r ==> t = sqrt(r/a). 
</span>
<span>Assuming the missing units are mutually compatible, as in the following example, they don't need to be known. </span>
<span>Acceleration = 1.6 cramwells/s^2 </span>
<span>Radius = 150 cramwells </span>
<span>t = sqrt(150/1.6) = 9.68 s.

I hope this helps.</span>
8 0
3 years ago
If a board with an area of 3m2 has a 12 N force exerted on it, what is the pressure on the board?
Cerrena [4.2K]
4 N/cm^2 is the answer. the way you get this is the formula for pressure is P=F/A. So you would plug in the numbers which would make the equation P=12/3 which you know equals 4. The units for pressure is N/cm^2 or N/m^2

I hope this helps 
4 0
4 years ago
Read 2 more answers
A group of scientists have obtained some experimental results.
topjm [15]
<span>In order best to find out whether the obtained experimental results are worth mor etime and resources the group of scientists should present their results (could be done also in poster session) to other scientists in order to hear their opinion and get a feedback. The shoudl also ask another researchers to redo the experiments and to compare the results. </span>
4 0
3 years ago
Read 2 more answers
a rock is dropped from a height of 80 m and is in free fall what is the velocity of as it reaches the ground 4.0 seconds later
Marta_Voda [28]
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v=80m/4s

v=20m/s

velocity = 20 meters per second
8 0
3 years ago
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