In the early morning hours of june 14, 2002, the earth had a remarkably close encounter with an asteroid the size of a small city. the previously unknown asteroid, now designated 2002 mn, remained undetected until three days after it had passed the earth. suppose that at its closest approach, the asteroid was 75900 miles from the center of the earth -- about a third of the distance to the moon. (a) find the speed of the asteroid at closest approach, assuming its speed at infinite distance to be zero and considering only its interaction with the earth. km/s (b) observations indicate the asteroid to have a diameter of about 2.0 km. estimate the kinetic energy of the asteroid at closest approach, assuming it has an average density of 3.33 g/cm3. (for comparison, a 1-megaton nuclear weapon releases about 5.6 multiplied by 1015 j of energy.)

11 words used to describe an object are called itsor characteristics.total12 is the amount of matter in an object.helt udedelerde elettroduodet littletadli dituntut uploaded13 the metric unit used to measure weight is them.14 if a toy has a mass of 1 kg, it has an earth weight 15 the density of liquid water isti

Dinate system, and a charge q = - 2.00 nc is placed s2 10 n> c. (a) what is the change in electric potential energy when the dipole moment of a molecule changes its orientation with respect to es from parallel to perpendicular? (b) at what absolute temperature t is the average translational kinetic energy 32 kt of a molecule equal to the change in potential energy calculated in part(: abovethistemperature,thermalagitationprevents the dipoles from aligning with the electric field.) placed in a uniform electric field e with magnitude 1.6 * 6 on the positive x-axis at x = 4.00 cm. (a) if a third charge q3 = +6.00 nc is now placed at the point x = 4.00 cm, y = 3.00 cm, find the x- and y-components of the total force exerted on this charge by the other two. (b) find the magnitude and direction of figure p21.62 ll uu 21.55 . torque on a dipole. an electric dipole with dipole moment ps is in a uniform external electric field es. (a) find the orientations of the dipole for which the torque on the dipole is zero. (b) which of the orientations in part (a) is stable, and which is unstable? (hint: consider a small rotation away from the equi- librium position and see what happens.) (c) show that for the stable orientation in part (b), the dipole’s own electric field tends to oppose the external field. 21.62 ..

Can anybody me with this? ? (picture included.)