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4 years ago

Heliocentric theory:

2 answers:

8 0

The answer is The Heliocentric Theory was a theory that the planets revolved around the sun

Answer: Proposed that the sun was the center of the solar system.

xz_007 [3.2K]4 years ago

5 0

Answer:

C) proposed that the sun was the center of the solar system

Explanation:

The Heliocentric model was proposed by Nicholaus Copernicus which describes the sun at the center of the solar system. The Earth with other planets and moons revolves around it in concentric orbits. Later, Kepler gave planetary laws which describes the planetary orbits as elliptical. Before heliocentric model, Ptolemy's geocentric model was popular which considered Earth as the center but it was proven incorrect with the Heliocentric model.

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Noah drops a rock with a density of 1.73 g/cm3 into a pond. Will the rock float or sink? Explain your answer

stealth61 [152]

Answer:

Sink

Explanation:

Water has a density of 1 g/cm³. Since the density of the rock is greater than the density of water, the rock will sink.

4 0

3 years ago

Read 2 more answers

In which of the following statements would the impact of gravity be the least? earth is pulled toward the Sun. Humans are pulled

Basile [38]

Answer:

The sun is pulled toward the moon.

Explanation:

It is the sun is pulled toward the moon because the moon doesn't have a great enough gravitational force or mass to pull the sun, so it must be some external force.

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3 years ago

A wave a strong undertow. What kind of wave is it

shutvik [7]

Hey there!

<span>Answer: </span>A swell

A wave which creates a strong undertow is called a swell. These types of waves are also known as <span>surface gravity waves.

Thank you!</span>

8 0

3 years ago

The modulus of elasticity for a ceramic material having 4.7 vol% porosity is 317 GPa. (a) Calculate the modulus of elasticity (i

elena-s [515]

Answer:

The answer is below

Explanation:

a) Given that the modulus of elasticity (E) = 317 GPa, to find the modulus of elasticity (in GPa) for the nonporous material ( $E_o$ ), we use the formula:

$E_0=\frac{E}{1-1.9P+0.9P^2}\\\\where\ P=4.7\%=0.047,hence:\\\\ E_0=\frac{317}{1-1.9(0.047)+0.9(0.047)^2}\\\\E_0=347.3\ GPa$

b) If the porosity P = 11.1%, then the modulus of elasticity is:

$E=E_0(1-1.9P+0.9P^2)=347.3(1-1.9(0.111)+0.9(0.111)^2)=278\ GPa$

5 0

3 years ago

A trooper is moving due south along the freeway at a speed of 23 m/s. at time t = 0, a red car passes the trooper. the red car m

Deffense [45]

The answer choice is 23

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3 years ago