Project seafarer was an ambitious program to construct an enormous antenna, buried underground on a site about 1 km^2 in area. its purpose was to transmit signals to submarines while they were deeply submerged. ordinarily, electromagnetic radiations do not penetrate very far into conductors such as seawater. assume that the effective wavelength was 3.5 x 10^4 earth radii.

(a) what would be the frequency of the radiations emitted? (units in hz)

(b) what would be the period of the radiations emitted? (units in seconds)

In all trials, the magnitude of the final velocity for g1 + g2 was less than the magnitude of any initial velocity. as mass increased, what happened to the velocity? the velocity decreased. the velocity increased. the velocity of g1 + g2 could not be measured. the velocity was not affected by the mass increase.

You can decrease the resistance of a length of wire by

In the nineteenth century, gregor mendel first determined some basic rules of genetics that have been observed throughout all types of life. no observations have disproved these basic rules of genetics. charles darwin developed the idea of biological evolution around the same time, but he was unaware of mendel’s discoveries in genetics. over a century later, darwin’s idea of evolution was modified in order to incorporate mendel’s rules of genetics along with the other evidence that darwin had used. what is most likely the relationship between mendel’s rules of genetics and darwin’s idea of biological evolution? a.)mendel’s genetics states laws that are now part of the theory of biological evolution.b.)biological evolution states laws that are part of mendel’s theory of genetics.c.)mendel’s genetics replaced darwin’s entire concept of biological evolution.d.)biological evolution is a law that explains why all genetics exist.