Answer:
The compression of the spring is 24.6 cm
Explanation:
magnitude of the charge on the left, q₁ = 4.6 x 10⁻⁷ C
magnitude of the charge on the right, q₂ = 7.5 x 10⁻⁷ C
distance between the two charges, r = 3 cm = 0.03 m
spring constant, k = 14 N/m
The attractive force between the two charges is calculated using Coulomb's law;
![F = \frac{kq_1q_2}{r^2} \\\\F = \frac{(9\times 10^9)(4.6\times 10^{-7})(7.5\times 10^{-7})}{(0.03)^2} \\\\F= 3.45 \ N](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7Bkq_1q_2%7D%7Br%5E2%7D%20%5C%5C%5C%5CF%20%3D%20%5Cfrac%7B%289%5Ctimes%2010%5E9%29%284.6%5Ctimes%2010%5E%7B-7%7D%29%287.5%5Ctimes%2010%5E%7B-7%7D%29%7D%7B%280.03%29%5E2%7D%20%5C%5C%5C%5CF%3D%203.45%20%5C%20N)
The extension of the spring is calculated as follows;
F = kx
x = F/k
x = 3.45 / 14
x = 0.246 m
x = 24.6 cm
The compression of the spring is 24.6 cm
<span>C: 8 cm
Assuming no friction, since the ball is starting with an elevation of 20 cm, it will end up with an elevation of 20 cm. So let's just calculate the result.
"slope of 5 cm of rise for each 2 cm of run". So for every 5 cm the ball rises, it will go 2 cm horizontally. Since we know the ball will have a total rise of 20 cm, that gives us
20 cm / 5 cm * 2 cm = 8 cm
And looking at the available answers, 8 cm is sitting right there. So the answer is
C: 8 cm</span>
Because plate movements have raised ancient sea floors above sea level, _________?
<span>Answer : Limestone that began as coral reefs can be found on the continents.</span>
The gravitational potential energy of the object is B) 84 Joules
Explanation:
The gravitational potential energy (GPE) of an object is the energy possessed by the object by virtue of its position in a gravitational field.
Near the Earth's surface, the GPE of an object is calculated as:
![GPE=mgh](https://tex.z-dn.net/?f=GPE%3Dmgh)
where:
m is the mass of the object
is the acceleration of gravity
h is the heigth of the object relative the surface
For the object in this problem:
m = 5.24 kg
h = 1.63 m
So, its GPE is
![GPE=(5.24)(9.8)(1.63)=84 J](https://tex.z-dn.net/?f=GPE%3D%285.24%29%289.8%29%281.63%29%3D84%20J)
Learn more about potential energy:
brainly.com/question/1198647
brainly.com/question/10770261
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