The mid-atlantic ridge crosses through iceland. physical features such as tensional fractures and cinder cone volcanoes are all aligned ne-sw. what does this indicate about the directions the tectonic plates are moving?

You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.

An alpha particle with kinetic energy 12.5 mev makes a collision with lead nucleus, but it is not "aimed" at the center of the lead nucleus, and has an initial nonzero angular momentum (with respect to the stationary lead nucleus) of magnitude l = p0 b, where p0 is the magnitude of the initial momentum of the alpha particle and b=1.40×10−12 m. (assume that the lead nucleus remains stationary and that it may be treated as a point charge. the atomic number of lead is 82. the alpha particle is a helium nucleus, with atomic number 2.) what is the distance of closest approach?

Ye li drew a quadrilateral that is both a rectangle and a rhombus. name the quadrilateral and describe it using the properties of sides and angles.