Answer:
- See the graph attached with the vectors.
Explanation:
The exercise is to draw the corresponding vectors:
![2\vec a\\\\3\vec c\\\\3\vec d\\\\3\vec f\\\\2\vec b](https://tex.z-dn.net/?f=2%5Cvec%20a%5C%5C%5C%5C3%5Cvec%20c%5C%5C%5C%5C3%5Cvec%20d%5C%5C%5C%5C3%5Cvec%20f%5C%5C%5C%5C2%5Cvec%20b)
Every one is the multiplication of a scalar by a vector.
The result of multiplying a scalar by a vector is a vector with the same direction of the original vector enlarged in a factor equal to the scalar magntitude.
Thus, in a graph the resulting vector is represented with a parallel arrow and pointing in the same direction as the original vector but with a length equal to the original length multiplied by the magnitude of the scalar.
For instance, the vector
is represented with an arrow in the same direction of
and with twice its length.
The figure attached contains the five requested vectors using the procedure explained above.
Answer:
Angle θ ≅ 21.5°
Explanation:
Given:
speed Vi= 60 m/s, Range R= 250 m, g=9.81 m/s²
To find:
Angle θ = ?
Sol: we know that Rang R = Vi² sin 2θ / g
⇒ Sin 2θ = g×R / Vi²
Sin 2θ = (9.81 m/s² × 250 m) / ( 60 m/s)²
Sin 2θ = 0.68125
2θ = Sin ⁻¹ (0.68125)
2θ = 42.9413
θ = 42.9413 / 2
θ = 21.4706 ≅ 21.5°
Answer:
hub moon merc saturn sun galaxy deep field
Explanation:
Answer:
The Height of a pyramid is 4r.
Explanation:
Explanation is in the following attachments
The easiest way to work this out is to think of the amount of decay as a percentage. so in 12 years its down to 50% another 12 years its down to 25%, another 12 years its 11.5 %.
<span>for a 20 gram sample to decay by half will still be 12 years no matter how many grams one has.</span>