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This assumption is correct. The emissivity of a substance is the ratio of the energy radiated from a body to the energy radiated from a black body (perfect emitter). Because these stars reflect negligible radiation compared to the amount they emit.
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Answers:</h2>
-The first direct detection of gravitational waves came in 2015
-The existence of gravitational waves is predicted by Einstein's general theory of relativity
-Gravitational waves carry energy away from their sources of emission
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Explanation:</h2>
Gravitational waves were discovered (theoretically) by Albert Einstein in 1916 and "observed" for the first time in direct form in 2015 (although the results were published in 2016).
These gravitational waves are fluctuations or disturbances of space-time produced by a massive accelerated body, modifying the distances and the dimensions of objects in an imperceptible way.
In this context, an excellent example is the system of two neutron stars that orbit high speeds, producing a deformation that propagates like a wave,<u> in the same way as when a stone is thrown into the water</u>. So, in this sense, gravitational waves carry energy away from their sources
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Therefore, the correct options are D, E and F.
K.e=1/2mv²
K.e=1/2 2(5)²
K.e=1/2 2×25
K.e=50/2
K.e=25J
Answer with Explanation:
If my target behavior is "smoking" then I'd suggest to ban places which allows smoking areas. This is a very effective way in order to address the behavior. People who violates this law will also be penalized and if they continue to violate it, then they will have to be brought to court. In such way, smoker's attention will be diverted to healthier activities. Instead of smoking outside, they can go jogging in order to relieve themselves from stress. They can also spend quality time with their family.
If they practice this every day, then it will gradually become a normal part of their routine until they totally give up smoking.
