An astronaut finds himself on a spherical asteroid whose radius is 500 km and whose mass is 1.2 x 1022 kg. a) What is the escape speed from the surface? b) How far from the surface will a particle go if it leaves the asteroid’s surface with a radial speed of 1000 m/s? c) With what speed will an object hit the asteroid if it is dropped from 1000 km above the surface? d) What is the acceleration due to the asteroid’s gravitational field at the surface? Recall that g = GM/R2
Answers: 2
Physics, 22.06.2019 15:20, mjwaple57
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/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . 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 17:00, bella51032
Explain what will happen if decomposers were apsent from a forest ecoysystem.
Answers: 1
Physics, 22.06.2019 20:10, kerarucker12pe384k
Atruck with 34-in.-diameter wheels is traveling at 55 mi/h. find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes:
Answers: 2
An astronaut finds himself on a spherical asteroid whose radius is 500 km and whose mass is 1.2 x 10...
History, 09.07.2019 21:30
Geography, 09.07.2019 21:30
Mathematics, 09.07.2019 21:30