5.5 s
Explanation:
The time it takes for the ball to reach its maximum height can be calculated using
![v_y = v_{0y} - gt \Rightarrow t = \dfrac{v_{0y}}{g}](https://tex.z-dn.net/?f=v_y%20%3D%20v_%7B0y%7D%20-%20gt%20%5CRightarrow%20t%20%3D%20%5Cdfrac%7Bv_%7B0y%7D%7D%7Bg%7D)
since
at the top of its trajectory. Plugging in the numbers,
![t = \dfrac{(54\:\text{m/s})}{(9.8\:\text{m/s}^2)} = 5.5\:\text{s}](https://tex.z-dn.net/?f=t%20%3D%20%5Cdfrac%7B%2854%5C%3A%5Ctext%7Bm%2Fs%7D%29%7D%7B%289.8%5C%3A%5Ctext%7Bm%2Fs%7D%5E2%29%7D%20%3D%205.5%5C%3A%5Ctext%7Bs%7D)
Answer:
1.8 × 10⁻⁸ Hm
Explanation:
Given that:
The refractive index of the film = 19
The wavelength of the light = 136.8 μ m
The thickness can be calculated by using the formula shown below as:
Where, n is the refractive index of the film
is the wavelength
So, thickness is:
Thickness = 1.8 μ m
Since,
1 μ m = 10⁻⁸ Hm
So,
Thickness = 1.8 × 10⁻⁸ Hm
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The coefficient of linear expansion, given that the length of the pipe increased by 1.5 cm is 1.67×10¯⁵ /°F
<h3>How to determine the coefficient of linear expansion</h3>
From the question given above, the following data were obtained
- Original diameter (L₁) = 10 m
- Change in length (∆L) = 1.5 cm = 1.5 / 100 = 0.015 m
- Change in temperature (∆T) = 90 °F
- Coefficient of linear expansion (α) =?
The coefficient of linear expansion can be obtained as illustrated below:
α = ∆L / L₁∆T
α = 0.015 / (10 × 90)
α = 0.015 / 900
α = 1.67×10¯⁵ /°F
Thus, we can conclude that the coefficient of linear expansion is 1.67×10¯⁵ /°F
Learn more about coefficient of linear expansion:
brainly.com/question/28293570
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Answer:
Since the area of the perfect square is 11650, and all of a squares sides ar equal, we just need to find the square root.
The square root of 11650 is 107.935166.
One side of the square is 107.935166
107.935166 x 107.935166 = 11650
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