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LenKa [72]
2 years ago
8

3. Suppose a free-fall ride at an amusement park starts at rest and is in free fall.

Physics
1 answer:
irga5000 [103]2 years ago
8 0

Answer:

v = 22.54m/s --- Velocity

h = 25.921m --- Distance

Explanation:

Given

u = 0m/s --- Initial velocity

Solving (a): Velocity after 2.3s

To do this, we use the first equation of motion

v = u + at

Where

t = 2.3s

a = g = 9.8m/s^2

So, the equation becomes:

v = 0 + 9.8 * 2.3

v = 0 + 22.54

v = 22.54m/s

Solving (b): Distance covered in 2.3s

We make use of:

h = ut + \frac{1}{2}gt^2

This gives:

h = 0 * 2.3 + \frac{1}{2}*9.8 * 2.3^2

h = \frac{1}{2}*9.8 * 5.29

h = 25.921m

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horsena [70]

Answer:

W = 2.3 10² F_{e}

Explanation:

The force of the weight is

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let's use the concept of density

         ρ= m / v

the volume of a sphere is

         V = \frac{4}{3} π r³

         V = \frac{4}{3} π (1.0 10⁻³)³

         V = 4.1887 10⁻⁹ m³

the density of water ρ = 1000 kg / m³

          m = ρ V

          m = 1000 4.1887 10⁻⁹

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therefore the out of gravity is

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          W = 41.05 10⁻⁶ N

now let's look for the electric force

           F_e = q E

           F_e = 12 10⁻¹² 15000

           F_e = 1.8 10⁻⁷ N

         

the relationship between these two quantities is

          \frac{W}{F_e} = 41.05 10⁻⁶ / 1.8 10⁻⁷

           \frac{W}{F_e} = 2,281 10²

             

             W = 2.3 10² F_{e}

therefore the weight of the drop is much greater than the electric force

3 0
2 years ago
The trachea splits into two branches called larynx true or false<br> pls answer somebodyyyyyyy
kirill115 [55]

Answer:

False

Explanation:

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3 years ago
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bija089 [108]
The term b^2 / 4a^2 is not added to the left side of the equation, because the term that was added to the right was not either b^2 / 4 a^2.

As you can see the ther b^2 / 4a^2 that appears in the last step of the table is inside a parenthesis, which is preceded by factor a.


Then, you need to apply the distributive property to know the term that you are really adding to the right side,  i.e. you need to mulitply b^2 / 4a^2 * a which is b^2 / 4a.


That means that you are really adding b^2 / 4a to the right, so that is the same that you have to add to the left, which is what the last step of the table shows.


That situation is reflected by the statement "<span>The distributive property needs to be applied to determine the value to add to the left side of the equation to balance the sides of the equation".</span>  That is the answer.
6 0
3 years ago
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