Question text essay 1 take the general case of an object of mass ma and velocity \nu_a elastically striking a stationary object (\nu_b = 0) of mass mb head-on. then the final velocities are given by \nu_a' = (\frac{m_a - m_b}{m_a + m_b})\nu_a \nu_b' = (\frac{2m_a }{m_a + m_b})\nu_a (a) what happens in the extreme case when ma is much smaller than mb? cite a common example of this. (b) what happens in the extreme case when ma is much larger han mb ? cite a common example of this. (c) what happens in the case when ma = mb? cite a common example.

The gun from the crime scene shows tool marks where the serial numbers are ground off. there are also tool marks on the bullets left behind. what information can the tool marks on the bullets and gun provide about the crime? what type of evidence does this information provide, individual or class?

Estimate the kinetic energy of the neptune with respect to the sun as the sum of the terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the sun. [assume the neptune is a uniform sphere with mass = 1.0×1026 kg , radius = 2.5×1010 m , rotation period 16.1 h , orbital period 6.01×104 d and is 4.6×109 km from the sun.]

The space within which a test north pole experiences a force magnetic poles 2. a powerful stream of electrons flowing high above the earth in the ionosphere electrojet 3. a concept to explain the directional nature of a magnetic field field lines 4. coil of wire designed to produce a magnetic field by a current passing through its windings ionosphere 5. that region above the earth's atmosphere where particles exist in an ionized state magnetic field 6. the extremities of a magnet where the field lines tend to converge or concentrate aurora borealis 7. a phenomenon that occurs in the northern latitudes; the northern lights solenoid