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3 years ago

Why do clouds usually form high in the air rather than near the earths surface

1 answer:

monitta3 years ago

3 0

"High in the air" is a matter of opinion and perspective. And, clouds do form near the earth's surface, we just call it fog. Clouds are often seen hanging around the top of mountains as well. However, the reason clouds usually form up in the air is clouds are moisture, and the moisture evaporates and rises from the earth to where the air is cooler above the earth surface. The moisture in the air then condenses to from lots of little water droplets that form the clouds. Depending upon the time of year and how warm and mosit the air is and how high and how cold the cold air is depends upon how high and what kind of clouds form.

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On a coordinate plane, which single transformation could map point A (3,-4) onto point A' (1.5,-2)? *

Ksenya-84 [330]

Answer: A dilation with rule: $(x,y)\to(\dfrac12x,\dfrac12y)$

Explanation:

A dilation is a non-rigid transformation that creates an image that is the same shape as the original but has a different size.

It uses a scale factor k such that

$(x,y)\to(kx,ky)$

(x,y)= coordinates of original figure

(kx,ky) = corresponding coordinate in the image.

To transform: A (3,-4) onto point A' (1.5,-2).

Using scale factor k= $\dfrac12$ , we have

$A(3,-4)\to A'(\dfrac12\times3, \dfrac12\times-4)=A'(1.5,-2)$

Required rule: $(x,y)\to(\dfrac12x,\dfrac12y)$

3 0

3 years ago

11. Why is HCl a strong acid and HClO a weak acid?

ankoles [38]

Strong acid:dissolves and dissociates 1005 to produce protons (H+) 1. seven
strong acids: HCI, HBr, HI, HNO3, H2SO4, and HCIO3. ...
weak acid: dissolves but less than 100% dissociates to produce protons (H+) 1.

3 0

3 years ago

Inclined planes reduce the amount of effort needed to move an object, but increases

QveST [7]

Inclined planes reduce the amount of effort needed to move an object, but increases the length of the ramp.

Explanation:

Mechanical advantage is the measure of amount of effort needed to move an object. The mechanical advantage can be calculated as the ratio of length of ramp to the height of ramp for an inclined plane.

As it is known that an object can be easily moved on an inclined plane than on a vertical plane, this is because, the inclined plane provides greater output force. But in that case, the effort required will be reduced with the cost of increasing the distance of the movement of object.

In other terms , the ramp's length of inclined planes has to get increased in order to reduce the amount of effort needed to move an object. This is because as the mechanical advantage has length of the ramp in the numerator, with the increase in numerator value or length value the mechanical advantage will also increase.

8 0

4 years ago

I need help with these two if you zoom in it’s clearer

makvit [3.9K]

Answer:

It looks alittle dark can you fix it?

3 0

3 years ago

The molecular geometry of SO 3 is a tetrahedral b. bent Coctahedral d. trigonal planar pyramidal

Dimas [21]

Answer:

The correct option is: d. trigonal planar

Explanation:

Sulfur trioxide is a chemical compound and the chemical formula of the compound is SO₃. In this molecule, the sulfur atom is in its +6 oxidation state and is covalently bound to three oxygen atoms. Sulfur trioxide is a neutral molecule. According to the VSEPR theory, Sulfur trioxide has a trigonal planar molecular geometry.

7 0

3 years ago