Aflat plate is oriented parallel to a 45 m/s airflow at 20°c and atmospheric pressure. the plate is l = 1 m in the flow direction and 0.5 m wide. on one side of the plate, the boundary layer is tripped at the leading edge, and on the other side there is no tripping device. find the total drag force on the plate.

this means that the temperature of both substances will be equal

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.