What are coronal holes?
What will be an ideal response?
Areas in the corona where the magnetic field lines open up to allow the solar wind to flow freely out into space.
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Current data suggest that ________ have at least one planet.
A) about 1 in 1 million stars B) about 1% of all stars C) about 10% of all stars D) most stars E) 100% of all stars
Fluid Flow: Water is flowing in a drainage channel of rectangular cross-section. The width of the channel is 15 m, the depth of water is 8.0 m, and the speed of the flow is 2.5 m/s. What is the mass flow rate of the water? The density of water is 1000 kg/m3.
A. 2.0 × 105 kg/s B. 2.0 × 103 kg/s C. 3.0 × 105 kg/s D. 3.0 × 103 kg/s E. 3.0 × 102 kg/s
A 40-kg box is being pushed along a horizontal smooth surface. The pushing force is 15 N directed at an angle of 15° below the horizontal. What is the magnitude of the acceleration of the crate?
A) 0.16 m/s2 B) 0.36 m/s2 C) 0.47 m/s2 D) 0.39 m/s2 E) 0.68 m/s2
The law of poles states that like magnetic poles ______________ and unlike magnetic poles ______________
Fill in the blank(s) with correct word