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3 years ago

14

Which scientist proposed the idea of a sun-centered solar system instead of an earth-centered solar system?

1 answer:

vovikov84 [41]3 years ago

5 0

Nicolaus Copernicus

This theory was first proposed by Nicolaus Copernicus. Copernicus was a Polish astronomer. He first published the heliocentric system in his book: De revolutionibus orbium coelestium, "On the revolutions of the heavenly bodies," which appeared in 1543.

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A disk with a diameter of 0.05 m is spinning with a constant velocity about an axle perpendicular to the disk and running throug

Maksim231197 [3]

Answer:

f= 7.8Hz

Explanation:

a= 12g= 120m/s²

a= ω²r

120= ω²×0.05

ω= 48.99 rad/s

2πf= 48.99

f= 7.8Hz

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3 years ago

An old truck compresses a spring scale at the junkyard by 25 cm. The spring constant for the industrial scale at the junkyard is

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mafiozo [28]

I believe it is D. 2

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2 years ago

Read 2 more answers

A unit for measuring frequency is the

jonny [76]

A.) Hertz is the measuring unit for frequency!!
[Your explanation is correct]

Hope this helps!

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3 years ago

What are the magnitude and direction of electric field at the center of square?

Kobotan [32]

Answer:

hello the diagram related to this question is missing attached below is the missing diagram

Answer :

The magnitude of the electric field = 4KQ / L^2

direction = 45° east to south

Explanation:

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direction = 45° east to south

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2 years ago