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alex41 [277]
3 years ago
14

Galileo Galilei was the first scientist to perform experiments in order to test his ideas. He was also the first astronomer to s

ystematically observe the skies with a telescope. Galileo made four key observations that challenged the widely accepted philosophical beliefs on which the geocentric model was based, thus providing support for the heliocentric model. From the following list of observations, which are the key observations made by Galileo that challenged widespread philosophical beliefs about the solar system?
a) Jupiter has orbiting moons.
b) The Sun has sunspots and rotates on its axis.
c) The Moon has mountains, valleys, and craters.
d) Venus goes through a full set of phases.
Physics
1 answer:
nalin [4]3 years ago
3 0

Answer:

A) jupiter has orbiting moons

Explanation:

Btw I'm not sure abt it

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A positive charge is moving across a room from south to north. A magnetic field runs from east to west. In what direction is the
sp2606 [1]

Answer:

the force is on the z axis, coming out of the blade

Explanation:

The direction of the magnetic force is given by the right hand rule,

For a positive charge, the thumb points in the direction of velocity, the other fingers extended in the direction of the magnetic field, and the palm points in the direction of force.

In this case.

Thumb points North

The fingers extended is in the east - west direction parallel to the blade

The palm is sticking out of the leaf, in the z direction

the answer is the force is on the z axis, coming out of the blade

7 0
3 years ago
Oceans and other bodies of water are found on which layer of earth
satela [25.4K]

Answer:

They are found in the Hydrosphere

Explanation:

holped it helped!!

7 0
2 years ago
Julian designs an experiment to see how well different liquids lubricate wooden surfaces. He sets up a number of identical woode
Diano4ka-milaya [45]

Answer:the answer is B.

Explanation:

This is because the experiment is done to see how well liquids lubricate <u>compared to</u> <u>non - lubricated surfaces.</u> in this experiment the non - lubricated surface is the wooden ramp so it should be used as control experiment.

4 0
4 years ago
Organic chemistry is the study of compounds containing A. carbon. B. hydrogen. C. oxygen. D. nitrogen.
natta225 [31]

Answer:

A. carbon

Explanation:

3 0
4 years ago
Read 2 more answers
What percent is the air density at the summit of Mount Everest relative to the air density at sea level?
Galina-37 [17]

Answer:

43.76%

Explanation:

The air density at the sea level ρ_s  = 1.25 kg/m^3.

also, air density at the top of the mountain where ρ_t = 0.547 kg/m^3.

taking temp as --50° C  and pressure as 1/3 of P_atm.

therefore,  t percent is the air density at the summit of Mount Everest relative to the air density at sea level

= \frac{\rho_t}{\rho_s}\times100

=\frac{0.547}{1.25}\times100

=43.76 %

8 0
4 years ago
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