Both F's are forces, so µ must be unitless/dimensionless.
F[friction] = µ F[normal]
Or, more explicitly in terms of the units:
(Newtons) = (constant) (Newtons)
Answer: a rubber band
Explanation: A rubber band has no conductivity and no electricity would be able to flow whereas steel and copper and aluminum would be able to allow electricity to flow due to how they are built
Answer : The distance of the image from the lens is, -42 cm
The height of the image is, 35 cm
Solution :
First we have to calculate the image distance.
Formula used :
where,
f = focal length = 7 cm
p = object distance = 6 cm
q = image distance = ?
Now put all the given values in the above formula, we get the distance of the image from the lens.
Therefore, the distance of the image from the lens is, 42 cm and the negative sign indicates that the image is virtual.
Now we have to calculate the height of the image.
Formula used :
where,
h = height of object = 5 cm
h' = height of image = ?
Now put all the given values in this formula, we get the height of the image.
Therefore, the height of the image is, 35 cm and the negative sign indicates that the image is inverted.
1. V = Vo + a*t.
<span>15 = 0 + a*5 a = 3 m/s^2. </span>
<span>2. V = Vo + a*t. </span>
<span>0 = 15 - 5*t, t = 3 s. </span>
<span>3. d1 = Vo*t + 0.5a*t^2. </span>
<span>Vo = 0, t = 5, a = 3 m/s^2, d1 = ?. </span>
<span>d2 = Vo*t. Vo = 15 m/s, t = 15 s, </span>
<span>d2 = ?. </span>
<span>V^2 = Vo^2 + 2a*d3. </span>
<span>V = 0, Vo = 15 m/s, a = -5 m/s^2, d3 = ?. </span>
<span>d1+d2+d3 = Total dist.</span>
The atoms according to the number of electrons it will lose or gain is matched as follows;
Sodium → lose 1
Nitrogen → gain 3
Sulphur → gain 2
Fluorine → gain 1
Boron → lose 3
Beryllium → lose 2
<h3>Atoms</h3>
Atoms are the building block of matter. The outermost electron of an atom determines the number of electron an atom loose during bonding. Therefore,
- Na(sodium) with an outermost electron of one will lose 1 electron to attain the octet rule.
- Nitrogen with an outermost electron of 5 will easily gain 3 electrons to attain the octet rule
- Sulphur(S) with an outermost electron of 6 will easily gain 2 electrons to attain the octet rule
- Fluorine with an outermost electron of 7 will easily gain 1 electrons to attain the octet rule
- Boron with an outermost electron of 3 will easily loose 3 electrons to attain the octet rule
- Beryllium with an outermost electron of 2 will easily loose 2 electrons to attain the octet rule
learn more on electrons here:brainly.com/question/5141076
