1. Choose the correct option. i) When seen from below, the blades of
a ceiling fan are seen to be revolving
anticlockwise and their speed is
decreasing. Select correct statement
about the directions of its angular
velocity and angular acceleration.
(A) Angular velocity upwards, angular
acceleration downwards.
(B) Angular velocity downwards,
angular acceleration upwards.
(C) Both, angular velocity and angular
acceleration, upwards.
(D) Both, angular velocity and
angular acceleration, downwards.

angular velocity upwards

angular accelaration downwards!!

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..