Consider a scenario in which the flywheel described in part (a) (r1 = 1.7 m, mass m1 = 19 kg, v = 55 m/s at the rim) is spinning freely at its maximum speed, when a second flywheel of radius r2 = 2.1 m and mass m2 = 29 kg is coaxially dropped from rest onto it and sticks to it, so that they then rotate together as a single body. calculate the energy, in joules, that is now stored in the wheel.

v 154.9= 0.9 length length s little over 154.9cm

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.