Physics, 27.08.2019 16:30 suewignall
Askater extends her arms horizontally, holding a 5-kg mass in each hand. she is rotating about a vertical axis with an angular velocity of one revolution per second. if she drops her hands to her sides, what will the final angular velocity (in rev/s) be if her moment of inertia remains approximately constant at 5 kg⋅m2, and the distance of the masses from the axis changes from 1 m to 0.1 m?
Answers: 3
Physics, 21.06.2019 22:00
There is a theory that indicates that dinosaurs became extinct when about 65 million years ago, a large asteroid hit the earth surface. dust caused by this collision blocked the sunlight reaching the earth's surface and many forms of life became extinct due to the cold. fearing this threat, how large the radius of an asteroid should you be looking for if the dangerous asteroid size is approximately the same as the one that killed the dinosaurs? available data suggests that about 18% of that asteroid's mass ended up as a dust spread evenly over earth after eventually settling out of the upper atmosphere. about 0.0180 g/cm^2 of dust, which is chemically different than the earth's rock, covered the earth's surface. typical asteroids have a density of about 1.9 g/cm^3. now that we know the size of the asteroid, how much energy was released during impact, assuming all of it was just the kinetic energy of the asteroid right before the impact?
Answers: 1
Physics, 22.06.2019 15:30
Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.
Answers: 2
Physics, 22.06.2019 16:00
The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.
Answers: 2
Askater extends her arms horizontally, holding a 5-kg mass in each hand. she is rotating about a ver...
English, 04.01.2021 04:00
Mathematics, 04.01.2021 04:00
Mathematics, 04.01.2021 04:00
Biology, 04.01.2021 04:00
Mathematics, 04.01.2021 04:00
Mathematics, 04.01.2021 04:00
Mathematics, 04.01.2021 04:00
Mathematics, 04.01.2021 04:00
English, 04.01.2021 04:00
Mathematics, 04.01.2021 04:00
Health, 04.01.2021 04:00
Chemistry, 04.01.2021 04:00
History, 04.01.2021 04:00