Why mirrors show texts in reverse order?

Answers

Answer 1
Answer: Mirrors reflect meaning shows what would be seen if everything was turned around, therefore, it shows text backwards because if it is turned around, it is in reverse order.
Answer 2
Answer: The image of plane mirror is flipped bilaterally. So texts are also flipped and you get to see them in reverse order.

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When a woman stands with two feet on a scale, the scale reads 280 N. When she lifts one foot, the scale reads A. less than 280 N. B. more than 280 N. C. 280 N.

Many scientists believe that the current period of global warming is related to increased levels of what?

Answers

In the question, "Many scientists believe that the current period of global warming is related to increased levels of what?" The correct answer is carbon dioxide. Global warming is a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants."

The main difference between speed and velocity involves A. direction.
B. weight.
C. gravity.
D. distance.

Answers

A. Direction

Speed is just distance divided by time, but velocity is displacement divided by time and displacement has direction. Speed will always be positive, but velocity can be either positive or negative.

The Correct answer to this question for Penn Foster Students is: Direction

When Tito lifts the heaviest object he can, he is testing his _____.

Answers

When Tito lifts the heaviest object he can, he is probably testing his ability to lift weight. In other words, he could also be testing his upper body muscle strength. The process is called weight-lifting and it is designed to test the muscle strength of your upper body. 

Explanation :  When Tito lifts the heaviest object, he is testing his strength.

We know, strength is the quality of the physical energy and potential of the person. The strength of the person is power and his capacity.

So, we can say that When Tito lifts the heaviest objects then he is testing his strength, potential, and power.

Suppose you discovered a new element with 120 protons and 2 electrons in its outer lever. In what group does this new element belong

Answers

Answer:

This new element belongs to the group 2.

Explanation:

In the periodic table, the vertical columns are called groups (or families). The elements in the same group share similar chemical and physical properties.

One of these properties is the same amount of outer valence electrons.

For example, in the group 1 the elements have 1 outer valence electron (If we assume that the element is in a neutral state which is without electrical charges).

If this new element has 2 electrons in its outer level it will belong to the group 2. The group 2 is well-known as alkaline earth metals.

For example, the magnesium (Mg) and the calcium (Ca) belong to the group 2.

Assuming the 2 valence electrons are of the neutral state of the new element, the element would belong in Group 2, the Alkaline Earth Metals.

When celery is placed in a glass of pure water the solution inside its cells is _____ compared to the water.?

Answers

The correct answer to the question above is hypertonic. When celery is being placed in a glass of pure water, the solution inside its cells is going to appear as hypertonic compared to the water. This means that the cells inside has a higher concentration than outside.

A sport car moving at constant speed travels 110m in 5.0 s. if it then brakes and comes to a stop in 4.0 s, what is the magnitude of its acceleration in m/s2, and in g’s (g=9.80 m/s2)? 2

Answers

d = 110 m,  t = 5 s
v o = 110 cs : 5 m = 22 m/s
-------------------------------------
v = v o - a t
v = 0 m/s,  v o =  22 m/s,  t = 4 s
0 = 22 - 4 a
4 a = 22
a = 22 : 4
a = 5.5 m/s²
g = 9.80 m/s²
9.80 : 5.5 = 0.56 
Answer:
The magnitude of its acceleration is 5.5 m/s or 0.56 g.