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3 years ago

Give an example of a theory scientists believed for a long time that was eventually proved false

1 answer:

6 0

There are so many to choose from, I'll give you two. One is a big one. The other so/so. People used to believe the earth was flat and you would fall off, until Christopher Columbus sailed across. And another interesting one is the vulcan planet theory, which is that there was an extra planet between Mercury and T sun. however it turned out to be false. So there, need anymore just tell me.

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ANEK [815]

Answer:

wut???

Explanation:

3 0

4 years ago

Can I have some help

earnstyle [38]

I think is D cuz all Yoou really need to do is look at the graph

4 0

3 years ago

A plane traveled for about 2.5hours at a speed of 1200kr/hr. How many<br> kilometers did it fly?"

valentina_108 [34]

1200 times 2.5 is 3000. So it flew 3000 kilometers.

8 0

3 years ago

A 10 mH inductor is connected in series with a 10-ohm resistor, a switch and a 6-volt battery.(a) What is the time constant of t

maxonik [38]

Explanation:

It is given that,

Inductance of the inductor, $L=10\ mH=10\times 10^{-3}\ H=10^{-2}\ H$

Resistance of the resistor, R = 10 ohms

(a) Let $\tau$ is the time constant of the circuit. It is given by :

$\tau=\dfrac{L}{R}$

$\tau=\dfrac{10^{-2}}{10}$

$\tau=0.001\ s$

$\tau=1\ ms$

(b) The current equation in RL circuit is given by :

$I'=I(1-e^{\dfrac{-t}{\tau}})$

I' = 0.99 I

$0.99=1-e^{\dfrac{-t}{\tau}}$

$e^{\dfrac{-t}{\tau}}=0.01$

$e^{\dfrac{-t}{1\ ms}}=0.01$

t = 4.6 ms

Hence, this is the required solution.

5 0

3 years ago

Match each action with the object that is primarily responsible for causing that action.

Dafna11 [192]

Moon's Orbit <u>(C). Earth</u>
Tides on Earth <u>(B). Moon</u>
Earth's Orbit <u>(A). Sun</u>

<h3>Introduction</h3>

Hi ! I will help you to explain about gravity. Gravity is one part of the force that will pull two or more objects that interact with each other to the center of their weight. Because it is a force, and interacts with mass, the gravitational force can also cause an acceleration called gravitational acceleration.The characteristic of gravity are:

Mass cannot be affected by gravitational acceleration, because mass itself has formed gravitational interactions.
The weight of an object is something that can be affected by the acceleration of gravity, because weight is a derived quantity in Newtons (N)
The lighter object will fall to the heavier object because the center of mass will be closer to the object with greater mass.

<h2>Explanation</h2>

Let's go into more detail about my answer!

<h3>Moon's Orbit</h3>

The moon undergoes two motions, orbiting the Earth and orbiting the sun together. So, here the gravitational force from the Earth can be said to have more effect on the Moon. Without the influence of Earth's gravity, the moon will orbit the sun itself by the interaction of its own gravitational force with the sun.

<h3>Tides on Earth</h3>

The tides are caused by the Moon's gravitational force. Remember ! The Earth's gravitational force always points downwards to make a constant (so that water does not spill when it is hit by the Moon's gravity). The Moon's gravitational force also depends on how close it is to Earth.

<h3>Earth's Orbit</h3>

Like the Moon, the Earth orbits the sun. However, the sun is now creating a gravitational field. Not only for Earth, but for all objects in the solar system.

How long does it take the moon to go through an entire set of phases? brainly.com/question/26486572

8 0

3 years ago