3. Vectors

$Which\; of\; the\; following\; must\; be\; included\; with\mathrm{magnitude}to\; fully\; represent\; a\mathrm{vector}quantity?$

Which of the following is a vector quantity?

Which of the following best describes a vector in physics?

Three point charges are fixed in place at the vertices of an equilateral triangle. If each charge has magnitude $q$ and the side length of the triangle is $a$, what is the magnitude of the net electric force on one of the charges due to the other two?

In the context of vectors, which of the following best describes the angle $\theta$ between two vectors $A$ and $B$?

Which of the following best describes vectors with an $x$ component of zero?

Which of the following correctly represents the vector sum $A+B$ if $A$ and $B$ are two vectors shown tail-to-head in the figure?

Rosa uses the formula $vi\left(\cos \right)t$ to do a calculation. Which value is Rosa most likely trying to find?

Why is a minimum of $3$ seismic stations needed to find the epicenter of an earthquake?

Three point charges are placed along the x-axis at positions $3$ cm, $8$ cm, and $11$ cm. If the charges are $\mathrm{+2}$ $\mu C$ at $3$ cm, $-3$ $\mu C$ at $8$ cm, and $\mathrm{+1}$ $\mu C$ at $11$ cm, what is the direction of the net electric force on the charge at $8$ cm due to the other two charges?

Given two vectors $\overrightarrow{e}$ and $\overrightarrow{f}$ as shown in Figure 2, what is the angle $\pi$ between them if $\overrightarrow{e}$ points along the positive x-axis and $\overrightarrow{f}$ points along the positive y-axis?

Which of the following vectors is equal to the cross product $r\times ab$?

Which of the following quantities is a vector?

In the context of $\mathrm{vectors}$ and motion, what is a reference point and what is its primary function?

In the context of vector operations, which two vector quantities were used as examples in the video?