<span>Our eyes can detect visible radiation, our skin can detect infra-red, our skin can also react to ultra-violet radiation by tanning, and producing skin cancers.
</span>Our brains can react directly to the impact of gamma rays ( as "seen" by astronauts )
<span>and some microwaves will cause us to heat up internally.
</span>
<span>While radio waves and ELF waves seem to ignore us totally without the aid of aerials and amplifiers. </span>
Answer: They behave the same because, according to the principle of equivalence, the laws of physics work the same in all frames of reference.
Explanation:
According to the equivalence principle postulated by Einstein's Theory of General Relativity, acceleration in space and gravity on Earth have the same effects on objects.
To understand it better, regarding to the equivalence principle, Einstein formulated the following:
A gravitational force and an acceleration in the opposite direction are equivalent, both have indistinguishable effects. Because the laws of physics must be accomplished in all frames of reference.
Hence, according to general relativity, gravitational force and acceleration in the opposite direction (an object in free fall, for example) have the same effect. This makes sense if we deal with gravity not as a mysterious atractive force but as a geometric effect of matter on spacetime that causes its deformation.
Answer:
Nerve and muscle function and fluid balance
Explanation:
:)
Answer:
0.619 cm
Explanation:
V = 2.17 m/s, diameter internal, D = 1.60 cm
v = 14.5 m/s, inside diameter, d = ?
According to the equation of continuity,
A V = a v
3.14 x (1.60/2)^2 x 2.17 = 3.14 x (d/2 )^2 x 14.5
5.5552 / 4 = d^2 x 3.625
d = 0.619 cm
