The power delivered is equal to the product between the voltage V and the current I:
This power is delivered for a total time of
, so the total energy delivered to the battery is
-- Each square meter of the bottom of the tank has 4 cubic meters
of water standing on it.
-- 4 cubic meters of water is equivalent to 4,000 liters.
-- So its mass is roughly 4,000 kilograms, and its weight is roughly
(4,000 x 9.81) = 39,240 newtons.
-- So the pressure on the bottom is roughly 39,240 newtons per
square meter, or 39,240 pascals, or <em>39.24 kPa</em>.
<h2>
Answer: c. refracting telescopes</h2>
Explanation:
Refracting telescopes have an optical system consisting of a set of lenses that have the property of deflecting (refracting) the light that passes through them.
In this way, the<u> images captured from distant objects converge on a point in the focal plane of the telescope.
</u>
However, the main disadvantage of this type of telescope is the chromatic aberration, which produces annoying color halos (mainly red and blue) around the image.
It should be noted that the chromatic aberration occurs because the different wavelengths that make up the light (the colors of the light) that passes through the objective lens deviate (refract) in different ways, causing them not to focus on the same point. For example, blue wavelengths are focused before the green wavelengths and these before the red ones. And this problem is stronger the shorter the focal length of the lens is.
Newton's First Law: A body will remain at rest or in motion in a straight line unless acted upon by a force.
Newton's Second Law: Change in motion is proportional to the applied force and parallel to it.
Newton's Third Law: To every action there is an equal and opposite reaction.
Things that would be hard to do in orbit are.
-turning a valve
-walking around
-trying to shower
-sitting still
