X-rays are used in medical applications to produce images of Bones tissues and organs x-rays are capable of penetrating tissue such as Skin but are less capable of penetrating bone this property of x-rays derives from which characteristic of the Rays a. their short wavelengths
b. their long wavelengths
c. their small amplitudes
d. their large amplitudes ​

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative