and the second explosion in that reference frame? If you answered yes\" to both,

Question

and the second explosion in that reference frame? If you answered yes" to both, what is distance between the explosions in your reference frame? Explain. (b) Physicists at UQ have recently discovered two new highly unstable elements, Corncium and Wegenerium. Corneium undergocs a special type of beta decay where an clectron is emitted from the nucleus, converting it into the slightly less massive nucleus of Wegenerium, while no other particles are emitted in the reaction. The mass of Corneium (Cn) is mn 100003.50 me while the mass of the Wogenerinn ion (wg+) ?s mwe* 100000.00 mae, where me is the mass of the electron Is mass conserved in this reaction? What about energy? Explain your answer. Part B (Advanced) (c) Estimate the speed at which the cjected electron is moving in the rest frame of a Corneium atom after it decays into a Wegenerium ion. Make sure you clearly state and justify your assumptions. (d) What is the spacctime interval(At)- (A)? What does it mean for it to be zero, (e Event A occurs at spacetime coordinates 1300 m, 2 ?s), whereas event B occurs at spacetime positive, or negative? coordinates (2400 m, 8 ?s). Could A possibly be the cause of B? Explain your answer. e r

Explanation / Answer

1.) distance between two event = 2400-1300 = 1100 m

time interval between two event = (8-2)= 6 micro sec

so velocity v = 1100/(6x10-6 ) = 1.83 x 108 m/s which is less than c.

So if we can find a frame 'S' having velocity greater than v(above) but less than c then with respect to that frame 'S', A can be the cause of B.

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