Answer:
1.4 m/s/s (2.s.f)
Explanation:
The formula for centripetal acceleration is:
, where v is velocity and r is the radius.
In the question we are given the information that the car has a mass of 1300kg, a velocity of 2.5m/s, and a turn radius of 8.5m which are all the values we need. Therefore we can simply substitute in the values to solve the question:
Therefore the centripetal acceleration of the car is 1.4m/s/s. (2.s.f)
Hope this helped!
Answer:
Protons and neutrons are all attracted to each other as a result - the strong nuclear force. This is an attractive force that only has an effect over a very short range in the nucleus.
Answer:
A
Explanation:
The asteroid belt is the farthest from the sun, so that means it will take the longest to orbit.
Answer:
Unmeltedd ice = 308.109 g
Explanation:
Gibbs Free energy:
A systems Gibbs Free Energy is defined as the free energy of the product of the absolute temperature and the entropy change less than the enthalpy change.
Therefore, G = ΔH-TΔS
where G is Gibbs Free Energy
ΔH is enthalpy change
T is absolute temperature
ΔS is entropy change
Here since there is a phase change, therefore G will be 0.
∴ΔH = TΔS
Given: Temperature, T = 0°C = 273 K
Entropy change,ΔS = 600 J/K
Latent heat of fusion of water = 333 J/g
∴ΔH = TΔS
∴ΔH = 273 x 600
= 163800 J
So this is the amount of enthalpy that will be used into melting of ice.
∴ΔH = mass of ice melted x latent heat of fusion of water
Mass of ice melted = ΔH / latent heat of fusion of water
= 163800 / 333
= 491.891 g
This is the mass of ice melted.
And initial amount of ice is 800 g
Amount of ice left after melting = Initial amount of ice - amount of ice melted
= 800-491.891
= 308.109 g
Amount of ice remained after melting = 308.109 g
Answer:
When did humans learn that the Earth is not the center of the universe?
Answer
1
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4 Answers
Asked in 3 Spaces


Science - Next Generation
Alexander Somm
, Consultant, Investor Relations at Novelpharm AG (2015-present)
Answered Oct 16
What, it isn’t?!
Sorry, I had to.
As far as I have read and understood, the Sumerians and later the Babylonians both had astronomical calendars that already differentiated planets and stars. Earth was not the center to them, the Sun likely was. That was around 2,200 - 1,600 BC.
After that, Greek philosopher Aristarchus of Samos (310 - 230 BC) was the first (recorded) to have believed the solar system was organized around the Sun, rather than the Earth. His heliocentric model was unpopular during Aristarchus’ lifetime, although it would inspire astronomers centuries later, such as Copernicus and Galileo.
Now, there are numerous archeological findings (cave paintings) and studies, that all suggest an understanding of complex astronomy in prehistoric times dating back as far as 40,000 years. This also explains how early, prehistoric migrants may have navigated the seas.
Explanation:
hope it helps
have a good day
