vectors

Related Questions

• Which of the following is a scalar quantity

  ---

• 100 coplanar forces each equal to 10 N act on a body. Each force makes angle $\pi /50$with the preceding force. What is the resultant of the forces

  ---

• The area of the parallelogram whose sides are represented by the vectors $\hat j + 3\hat k$ and $\hat i + 2\hat j - \hat k$ is

  ---

• The linear velocity of a rotating body is given by $\overrightarrow v = \overrightarrow \omega \times \overrightarrow r ,$where $\overrightarrow \omega $ is the angular velocity and $\overrightarrow r $ is the radius vector. The angular velocity of a body is $\overrightarrow \omega = \hat i - 2\hat j + 2\hat k$ and the radius vector $\overrightarrow r = 4\hat j - 3\hat k,$ then $|\overrightarrow v |$ is

  ---

• A vector ${\overrightarrow F _1}$is along the positive X-axis. If its vector product with another vector ${\overrightarrow F _2}$is zero then ${\overrightarrow F _2}$ could be

  ---