Give evidence that magnetism plays a role in planetary nebula formation
What will be an ideal response?
Most of them are bipolar ejections, and many show complicated yet symmetrical structure, as if molded by magnetic fields, much like the symmetrical auroral displays we find around the poles of Jupiter, Saturn, and even the Earth.
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When a large galaxy collides with a small galaxy, the smaller galaxy may be pulled apart by tidal forces
Indicate whether the statement is true or false
When the Moon rises at approximately 12 noon, it is in the ______________ phase
a. first-quarter b. last-quarter c. new d. full
If a car is traveling eastward and slowing down, what is the direction of the acceleration on the car that causes it to slow down? pan>
1.No acceleration is required to slow the car. 2.eastward 3.None of these choices is correct. 4.westward
A horizontal 80-cm-diameter hatch is located on the top of a submersible designed for a diver to escape. If the submersible is 100 m below the surface of the ocean, estimate the minimum force required to open the hatch. Assume Ssaltwater = 1.02.
(A) 300 kN (B) 400 kN (C) 500 kN (D) 600 kN