In countries at far northern latitudes, the winter months tend to be so cloudy that astronomical observations are nearly impossible. why can’t good observations of the stars be made at those places during the summer months?

Determine the maximum r-value of the polar equation r =3+3 cos 0

Ms. hidalgo opens the door to her classroom. her classroom is 60 degrees and the air outside is 80. predict what will happen using your knowledge of how heat flows.

Steelhead trout migrate up stream to spawn. occasionally they need to leap up small waterfalls to continue their journey. fortunately, steelhead are remarkable jumpers, capable of leaving the water at a speed of 8.0 m/s. a. what is the maximum height a steelhead trout can jump? b. leaving the water at 8.0 m/s, the trout lands on top of the water fall 1.8 m high. how long was it in the air?