Earth rotates about its axis in _______ direction.

The earth rotates about the sun as shown int he figure is an elliptical orbit. At which point the velocity will be maximum

A cylindrical bar magnet is rotated about its axis (Fig EP 6.3). A wire is connected from the axis and is made to touch the cylindrcial surface through a contact. Then

A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad s^-1 . The radius of the cylinder is 0.25 m. What is the kinetic energy associated with the rotation of the cylinder? What is the magnitude of angular momentum of the cylinder about its axis?

A line through the point A (2, 0), which makes an angle of 30^@ with the positive direction of x-axis is rotated about A in clockwise direction through an angle 15^@ . Then the equation of the straight line in the new position is :

A magnetic needle free to rotate about the vertical direction (compass ) point 3.5 west of the geographic north . Another magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down at 18^(@) with the horizontal . The magnitude of the horizontal component of the earth ' magnetic field at the place is known to be 0.40 G . what is the direction and magnitude of the earth's magnetic field at the place ?

Current loop does not tend to rotate when its plane is bot to the direction of magnetic field. Why?

A uniform metallic rod rotates about its perpendicular bisector with constant angular speed. If it is heated uniformly to raise its temperature slightly

A solid cylinder of mass 2kg and radius 20 cm is rotating about its axis with a frequency (10//pi)Hz .The rotational kinetic energy of the cylinder is :