Answers: 3
Physics, 22.06.2019 04:30
Light from the sun reaches the earth in 8.3 minutes. the velocity is 3.00 x 10^8 m/s. how far is earth from the sun? i know how to get to d = (3 x 10^8 m/s)(498 sec). i just don't know how to get from there to the answer being 1.5 x 10^11 m.
Answers: 3
Physics, 22.06.2019 15:20
Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(mβ
k), and the styrofoam has k= 0.010 w/(mβ
k). the interior surface temperature is 19.0 βc , and the exterior surface temperature is -15.0 βc . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2
Answers: 2
Physics, 22.06.2019 23:30
When barack obama was running for president, at a campaign stop he tried to bowl, something he isn't very good at. the media loved it because he threw a gutter ball while they were all watching. this is an example of:
Answers: 2
Physics, 23.06.2019 18:00
Which sentence indicates that curium is a not a mineral? curium is a chemical element. it is a hard metal that looks like silver in light and glows red in the dark. it was first identified by american scientists working with nuclear energy during world war ii. the scientists, who included glenn seaborg, ralph james, and albert ghiorso, named the element after marie and pierre curie, nobel prize-winning scientists. they found that this human-made element is created when plutonium is bombarded with alpha-particles using a cyclotron. curium is a highly radioactive substance. it is extremely hazardous to human health. on entering the human body, it can hamper the production of red blood corpuscles and cause cancer. however, scientists continue to produce the element for its usefulness in scientific research. for example, it scientists understand the composition of rocks and soil on mars and can also be used to produce thermal energy. scientists have succeeded in producing many curium compounds, such as curium dioxide and curium chloride. these compounds are also used primarily in scientific research.
Answers: 3
Define a rotation of the earth answer fast...
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