Answer: time=4 hours
Explanation:
formula:
speed = ![\frac{distance}{time}](https://tex.z-dn.net/?f=%5Cfrac%7Bdistance%7D%7Btime%7D)
time = ![\frac{distance}{speed}](https://tex.z-dn.net/?f=%5Cfrac%7Bdistance%7D%7Bspeed%7D)
time= x
speed = 120km/hr
distance = 480 km
x = ![\frac{480 km}{120km/hr\\}](https://tex.z-dn.net/?f=%5Cfrac%7B480%20km%7D%7B120km%2Fhr%5C%5C%7D)
=![\frac{48km*hr}{12km}](https://tex.z-dn.net/?f=%5Cfrac%7B48km%2Ahr%7D%7B12km%7D)
cut the zeros
and remove the signs
then
= 4
therefore, time taken to deliver the shipment by trucker is 4 hours
The only evidence you have that you exist as a self-aware being is your conscious experience of thinking about your existence. Beyond that you're on your own. You cannot access anyone else's conscious thoughts, so you will never know if they are self-aware.
Answer:
<h3>The answer is 2.5 g/cm³</h3>
Explanation:
The density of a substance can be found by using the formula
![density = \frac{mass}{volume} \\](https://tex.z-dn.net/?f=density%20%3D%20%20%5Cfrac%7Bmass%7D%7Bvolume%7D%20%20%5C%5C%20)
From the question we have
![density = \frac{25}{10} = \frac{5}{2} \\](https://tex.z-dn.net/?f=density%20%3D%20%20%5Cfrac%7B25%7D%7B10%7D%20%20%3D%20%20%5Cfrac%7B5%7D%7B2%7D%20%20%5C%5C%20)
We have the final answer as
<h3>2.5 g/cm³</h3>
Hope this helps you
Answer:
it is separated by 80 cm distance
Explanation:
As per Coulombs law we know that force between two point charges is given by
![F = \frac{kq_1q_2}{r^2}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7Bkq_1q_2%7D%7Br%5E2%7D)
here we know that
![q_1 = +8.4\mu C](https://tex.z-dn.net/?f=q_1%20%3D%20%2B8.4%5Cmu%20C)
![q_2 = +5.6 \mu C](https://tex.z-dn.net/?f=q_2%20%3D%20%2B5.6%20%5Cmu%20C)
force between two charges is given as
![F = 0.66 N](https://tex.z-dn.net/?f=F%20%3D%200.66%20N)
now we have
![F = \frac{kq_1q_2}{r^2}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7Bkq_1q_2%7D%7Br%5E2%7D)
![0.66 = \frac{(9\times 10^9)(8.4 \mu C)(5.6 \mu C)}{r^2}](https://tex.z-dn.net/?f=0.66%20%3D%20%5Cfrac%7B%289%5Ctimes%2010%5E9%29%288.4%20%5Cmu%20C%29%285.6%20%5Cmu%20C%29%7D%7Br%5E2%7D)
![r = 0.8 m](https://tex.z-dn.net/?f=r%20%3D%200.8%20m)
so it is separated by 80 cm distance
(a) The equation for the work done in stretching the spring from x1 to x2 is ¹/₂K₂Δx².
(b) The work done, in stretching the spring from x1 to x2 is 11.25 J.
(c) The work, necessary to stretch the spring from x = 0 to x3 is 64.28 J.
<h3>
Work done in the spring</h3>
The work done in stretching the spring is calculated as follows;
W = ¹/₂kx²
W(1 to 2) = ¹/₂K₂Δx²
W(1 to 2) = ¹/₂(250)(0.65 - 0.35)²
W(1 to 2) = 11.25 J
W(0 to 3) = ¹/₂k₁x₁² + ¹/₂k₂x₂² + ¹/₂F₃x₃
W(0 to 3) = ¹/₂(660)(0.35)² + ¹/₂(250)(0.65 - 0.35)² + ¹/₂(105)(0.89 - 0.65)
W(0 to 3) = 64.28 J
Learn more about work done here: brainly.com/question/25573309
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