<u>Answer:</u>
Cheryl, Heather and Keaton all are correct.
<u>Explanation:</u>
Everything around you is made of matter and matter is anything that has mass and occupies space or in other words, anything which has volume is called matter.
Here, in the given example, Cheryl, Heather and Keaton all are correct because the mug, the hot chocolate which is inside the mug and the steam coming out of it, all have mass. Therefore, all are correct except for Mikayla.
vf = 10 m/s. A ball with mass of 4kg and a impulse given of 28N.s with a intial velocity of 3m/s would have a final velocity of 10 m/s.
The key to solve this problem is using the equation I = F.Δt = m.Δv, Δv = vf - vi.
The impulse given to the ball with mass 4Kg is 28 N.s. If the ball were already moving at 3 m/s, to calculate its final velocity:
I = m(vf - vi) -------> I = m.vf - m.vi ------> vf = (I + m.vi)/m ------> vf = I/m + vi
Where I 28 N.s, m = 4 Kg, and vi = 3 m/s
vf = (28N.s/4kg) + 3m/s = 7m/s + 3m/s
vf = 10 m/s.
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Answer:
Zoning ordinances detail whether specific geographic zones are acceptable for residential or commercial purposes. Zoning ordinances may also regulate: - size
- placement
- density
- height of structures
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Answer:
Electrical force, F = 90 N
Explanation:
It is given that,
Charge on sphere 1, ![q_1=9\ \mu C=9\times 10^{-6}\ C](https://tex.z-dn.net/?f=q_1%3D9%5C%20%5Cmu%20C%3D9%5Ctimes%2010%5E%7B-6%7D%5C%20C)
Charge on sphere 2, ![q_1=4\ \mu C=4\times 10^{-6}\ C](https://tex.z-dn.net/?f=q_1%3D4%5C%20%5Cmu%20C%3D4%5Ctimes%2010%5E%7B-6%7D%5C%20C)
Distance between two spheres, d = 6 cm = 0.06 m
Let F is the electrical force between them. It is given by the formula of electric force which is directly proportional to the product of charges and inversely proportional to the square of distance between them such that,
![F=k\dfrac{q_1q_2}{d^2}](https://tex.z-dn.net/?f=F%3Dk%5Cdfrac%7Bq_1q_2%7D%7Bd%5E2%7D)
![F=9\times 10^9\times \dfrac{9\times 10^{-6}\times 4\times 10^{-6}}{(0.06)^2}](https://tex.z-dn.net/?f=F%3D9%5Ctimes%2010%5E9%5Ctimes%20%5Cdfrac%7B9%5Ctimes%2010%5E%7B-6%7D%5Ctimes%204%5Ctimes%2010%5E%7B-6%7D%7D%7B%280.06%29%5E2%7D)
F = 90 N
So, the electrical force between them is 90 N. Hence, this is the required solution.
Absorption happens when <span>all of the energy from light waves is transferred to a medium.</span>