Rectangular Coordinate System

A cube of edge a has its edges parallel to X, Y and Z -axis of rectangular coordinate system. A uniform electric held E is parallel to Y-axis and uniform magnetic field B parallel to x axis. The rate at which energy flows through each face of the cube is

Which of the following is a null vector (a) velocity vector of a body moving in a circle with a uniform speed (b) velocity vector of a body moving in a straight line with a uniform speed (c) position vector of the origin of the rectangular coordinate system (d) displacement vector of a stationary object

Which of the following is a null vector (a) velocity vector of a body moving in a circle with a uniform speed (b) velocity vector of a body moving in a straight line with a uniform speed (c) position vector of the origin of the rectangular coordinate system (d) displacement vector of a stationary object

Rectangular coordinate axes

Express the polar equation r=2costheta in rectangular coordinates.

Express the polar equation r=2costheta in rectangular coordinates.

Express the polar equation r=2costheta in rectangular coordinates.