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3 years ago

10

Select all that apply. which of the following astronomers supported the sun-centered system? tycho brahe johannes kepler coperni

cus ptolemy

2 answers:

ser-zykov [4K]3 years ago

8 0

Answer:Ptolemy

Explanation; He supported heloiocentrism.

Which say the sun is in the middle

Alex73 [517]3 years ago

3 0

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-Tycho Brahe and

-Ptolemy

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The sun is a hot ball of glowing gases which is a star whose gravity holds the solar system together and also keeping all the planet and smallest particles of debris in its orbit.

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4 years ago

I'm looking at the barometer in my lab as i type this question. it says the pressure is 0.905 atm. what is this pressure express

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1 atm is equivalent to 760 torr.

To express 0.905 atm in torr, all you have to do is cross multiplication as follows:
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3 years ago

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4 years ago

Alberta is going to have dinner at her grandmother's house, but she is running a bit behind schedule. As she gets onto the highw

viktelen [127]

Complete Question

Alberta is going to have dinner at her grandmother's house, but she is running a bit behind schedule. As she gets onto the highway, she knows that she must exit the highway within 55 min if she is not going to arrive late. Her exit is 43 mi away. How much time would it take at the posted 60 mph speed?

Answer:

The time it would take at the given speed is $x = 43.00 \ minutes$

Explanation:

From the question we are told that

The time taken to exist the highway is $t = 55 min$

The distance to the exist is $d = 43\ mi$

Alberta speed is $v = 60 mph$

The time it would take travelling at the given speed is mathematically represented as

$t_z = \frac{d}{v}$

substituting values

$t_z = \frac{43}{60}$

$t_z = 0.71667\ hrs$

Converting to minutes

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So 0.71667 hours = x minutes

Therefore

$x = 0.71667 * 60$

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3 years ago