Answer:
Explanation:
Use the equation:
(where T is the period)
(9 comes from the period of a full wavelength)
Answer:
a) 1.6*10^21 Joules.
b) 40,000
Explanation:
part a )
maximum destructive energy that can be released is the case when all the kinetic energy of the asteroid is consumed.
therefore E = 1/2 m v^2
m= density * volume
= 3100* (4/3* pi * 1000^3 ) = 12978666666666.67 kg
given v = 16000m/s
therefore
E= 1/2 * 12978666666666.67 * 16000 * 16000
= 1.6 x 10^21 Joules!
part B)
each bomb is capable of 4 x 10^16 joules
therefore no of bombs that are needed to produce the required energy are
1.6 x 10^21 / 4 x 10^16 = 40,000
that is 40,000 such nuclear bombs are required!
