(12 points) When forces are UNBALANCED on an object, the object could: (Choose all that apply)
1 answer:
As per Newton's law when unbalanced force is acting on the object
so acceleration of the object is given as
since object is accelerating here so we can say that due to unbalanced force there must be change in velocity of the object
So correct answer regarding change in velocity must be given as
<u>3. Decelerate </u>
<u>4. Stop moving </u>
<u>5. Accelerate </u>
<u>7. Start moving</u>
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Answer:
D. Top is emission; bottom absorption.
Explanation:
Emission and spectrum of elements are due to the element absorbing or emitting wavelength of e-m energy. Elementary particles of elements can absorb energy from a ground state to enter an excited state, creating an absorption spectrum, or they can lose energy and fall back to a lower energy state, creating an emission spectrum. A simple rule to differentiate between an emission and an absorption spectrum is that: "all absorbed wavelength is emitted, but not all emitted wavelength is absorbed."
From the image, the lines indicates wavelengths. We can see that all of the wavelengths of the bottom absorption spectrum coincides with some of the wavelength of the upper emission wavelengths.
