Answer:
(a) θ = 45° = 0.78 rad
(b) θ = 32.27° = 0.56 rad
(c) θ = 57.27° = 1 rad
Explanation:
When a vector is resolved into its rectangular components, the formula for the direction angle of the vector with positive x-axis is given as:
tan θ = Ay/Ax
θ = tan⁻¹(Ay/Ax)
(a)
Ax = 12 m
Ay = 12 m
θ = tan⁻¹(12 m/ 12 m)
θ = tan⁻¹(1)
<u>θ = 45° = 0.78 rad</u>
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(b)
Ax = 19 m
Ay = 12 m
θ = tan⁻¹(12 m/19 m)
θ = tan⁻¹(0.6315)
<u>θ = 32.27° = 0.56 rad</u>
<u />
(c)
Ax = 12 m
Ay = 19 m
θ = tan⁻¹(19 m/12 m)
θ = tan⁻¹(1.58333)
<u>θ = 57.27° = 1 rad</u>
<u />
Hi , I think that the elements that have one valence electron and that are in the alkali metals are the answers .
1.lithium
2.sodium
3.potassium
4.rubidium
5.cesium
6.francium
lbs pounds . it puts pressure on everything
