Which family do pulse-producing plants belong to?

$A$ wire of length $10 \, cm$ translates in a direction making an angle of $60^\circ$ with its length. The plane of motion is perpendicular to a uniform magnetic field of $1.0 \, T$ that exists in the space. Find the $emf$ induced between the ends of the rod if the speed of translation is $20 \, cm/s.$

If $a = 2i + j - k, b = i + 2j + k$ and $c = i - j + 2k,$ then $a \cdot (b \times c) = $

$y+x^2=\frac{dy}{dx}$ has the solution

$\sum_{k=1}^{2n+1} (-1)^{k-1} k^2$ is equal to

The pole of the straight line $x+4y=4$ with respect to the ellipse $x^2+4y^2=4$ is