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Sunny_sXe [5.5K]
3 years ago
12

Evaluate tan45/tan45

Physics
2 answers:
Andru [333]3 years ago
7 0

Answer:

1

Explanation:

tan 45° = √2\2

tan <em>θ</em><em> </em><em>=</em><em> </em><em>y</em><em>\</em><em>x</em>

According to the <em>Unit </em><em>Circle</em>, when you divide √2\2 by

itself, you get 1.

SIZIF [17.4K]3 years ago
5 0

I'm not sure I completely understand the expression you want evaluated.

It looks like a fraction with the same exact thing in both the numerator and the denominator. A fraction like that always boils down to ' 1 '.

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Can you predict the speed of a car as it moves down the track?
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Answer I will say no

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April stands on a flat surface . If she has a mass of 72 what is the nirmal force acting on her
gayaneshka [121]

The normal force acting on April as she stands on a flat surface is 705.6 N.

Normal force of the girl

Fₙ = mg

where;

  • Fₙ is the normal force of the girl
  • m is mass of the girl
  • g is acceleration due to gravity

Fₙ = 72 x 9.8

Fₙ = 705.6 N

Thus, the normal force acting on April as she stands on a flat surface is 705.6 N.

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7 0
2 years ago
The initial concentration of acid ha in solution is 0.39 m. if the ph of the solution at equilibrium is 0.76, what is the percen
Alexus [3.1K]

The percent ionization of the acid is 44.56%

<h3>How can we calculate the percent ionization of the acid?</h3>

To calculate the percent ionization of the acid we are using the formula,

The H⁺ ion concentration [H⁺] = C x,

where, we are given,

C= concentration of the acid.

=0.39 M

x= degree of dissociation of the acid.

And one more thing we are given that, the pH of the acid=0.76.

So from the above statement we can say that,

pH = - log [H⁺]

Or,0.76 = -log [H⁺]

Or, log [H⁺] = -0.76

Or, [H⁺] = antilog -0.76

Or,[H⁺]= 10^-0.76

Or,[H⁺]=0.1738.

Now from the above calculation we know, the H⁺ ion concentration= 0.1738 M.

Now we put the known values in the above equation,

[H+]= Cx

Or,0.1739= 0.39 x

Or, x= 0.4459

From the above calculation we can conclude that the percent Ionization of the acid= 0.4459 X 100= 44.59%≈45%

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4 0
1 year ago
Changes in motion come from;
almond37 [142]

Answer:

C-Mass

Explanation:

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