A jet of water (20◦C) impinges on a turbine blade that is translating at constant velocityU= 5 m/s. The velocity of the jet relative to the fixed nozzle of 12 cm2cross section isVj= 25 m/s. The blade turns the jet so that it makes an angleθ= 150◦measured counterclockwise from the positive x-axis. Taking into account the weight of the 150 N blade, butneglecting the weight of water on the blade, calculate:

(a) the horizontal and
(b) vertical components of force required to maintain constant blade speed.

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.