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Ultrasound is a frequency where higher than that which is audible. So the answer is "high frequency".
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30 km/h * 17 h = 30*17 km/h *h
= 510 km
Explanation:
The box has no acceleration in the perpendicular direction, so the net force in that direction is 0.
Sum of forces in the parallel direction:
∑F = f − F∥ − mg∥
∑F = f − F cos φ − mg sin θ
The answer to ur question is: B
S orbital.
Group 1 elements have a general configuration , where n represents the highest occupied Principal Energy Level. For example, Lithium has the valence configuration whereas Cesium has . Both of them belong to Group 1 of Periodic Table.
Group 2 elements have a general configuration of . For example, Magnesium has as its outer shell configuration while Strontium has the same as .
We see that in both the cases, the outermost S orbital is being filled.