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cricket20 [7]
3 years ago
8

In the history of astronomy, which of the following is true? . A] Tycho Brahe built one of the first observatories. B] Ptolemy w

as criticized for his work on the heliocentric model. C] Nicolaus Copernicus argued that the sun was the center of the universe. .D] Johannes Kepler argued that Earth was the center of the universe. . .
Physics
2 answers:
matrenka [14]3 years ago
6 0

Answer: C] Nicolas Copernicus argued that the sun was the center of the universe.

Explanation:  

The first observatory was built for Tycho Brahe, a Danish astronomer on the island of Hven by King Frederick II of Denmark. Ptolemy supported the geocentric model which considered Earth to be at the center of the universe. Johannes Kepler supported the heliocentric model.

Thus, the only true statement from the given options is that Nicolas Copernicus argued that the Sun was the center of the universe. He proposed the Heliocentric model. He believed the Sun to be the center and every other object - planets , stars revolved about the Sun.

Gelneren [198K]3 years ago
4 0
D. <span>Johannes Kepler argued that Earth was the center of the universe.

</span>
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You are packing for a trip to another star. During the journey, you will be traveling at 0.99c. You are trying to decide whether
Elenna [48]

Answer:

Do neither of these things ( c )

Explanation:

For length contraction : Is calculated considering the observer moving at a speed that is relative the object at rest applying this formula

L = (l) \sqrt{1 -\frac{v^{2} }{c^{2} } }

where l = Measured distance from object at rest, L =  contracted measured in relation to the observer , v = speed of clock , c = speed of light

you will do neither of these things because before you can make such decisions who have to view the object in this case yourself from a different frame from where you are currently are, if not your length and width will not change hence you can't make such conclusions/decisions .

7 0
3 years ago
1) A satellite in orbit around Earth is in uniform circular motion. What is the angle between the velocity vector and accelerati
artcher [175]

Answer:90

Explanation: bc i looked it up

6 0
1 year ago
A rabbit is moving in the positive x-direction at 1.10 m/s when it spots a predator and accelerates to a velocity of 10.9 m/s al
anzhelika [568]

Answer:

aₓ = 0 ,       ay = -6.8125 m / s²

Explanation:

This is an exercise that we can solve with kinematics equations.

Initially the rabbit moves on the x axis with a speed of 1.10 m / s and after seeing the predator acceleration on the y axis, therefore its speed on the x axis remains constant.

x axis

          vₓ = v₀ₓ = 1.10 m / s

          aₓ = 0

y axis

initially it has no speed, so v₀_y = 0 and when I see the predator it accelerates, until it reaches the speed of 10.6 m / s in a time of t = 1.60 s. let's calculate the acceleration

         v_{y}= v_{oy} -ay t

          ay = (v_{oy} -v_{y}) / t

          ay = (0 -10.9) / 1.6

          ay = -6.8125 m / s²

the sign indicates that the acceleration goes in the negative direction of the y axis

8 0
3 years ago
CNA Secondary and Preparatory School
ale4655 [162]

Answer:

2:13 2) cm' c6462.

Explanation:

3 0
2 years ago
What is the voltage in a circuit that has a current of 10.0 amps and a resistance of 28.5 ohms?
marin [14]
Voltage = Current (I) × Resistance (R)
V = 10 × 28.5 = 285v
6 0
3 years ago
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