An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

The device delivers a total charge of 450 coulombs over 30 seconds. This corresponds to approximately 2.81 x 10^21 electrons flowing through the device. Thus, about 2.81 x 10^21 electrons are involved in the current of 15.0 A over the given time.
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Answered by Anonymous | 2025-07-04

Quadrilateral KITE has vertices K(0, -2), I(1, 2), T(7, 5), and E(4, -1).
K I = K E = 17 ​ and I T = TE = 3 5 ​ .
KITE is a kite because two consecutive pairs of adjacent sides have equal lengths.
Therefore, KITE is a kite because two consecutive pairs of adjacent sides have equal lengths ​ .

Explanation

Analyze the given information First, we analyze the given information. We have a quadrilateral KITE with vertices K(0, -2), I(1, 2), T(7, 5), and E(4, -1). We are given the lengths of the sides KI, KE, IT, and TE. We need to determine why KITE is a kite.

Recall the definition of a kite A kite is defined as a quadrilateral with two pairs of adjacent sides that are equal in length. We are given that K I = 17 ​ and K E = 17 ​ . Also, I T = 3 5 ​ and TE = 3 5 ​ . This means that KI and KE are equal in length, and IT and TE are equal in length.

Conclude that KITE is a kite Since KI = KE and IT = TE, we have two pairs of adjacent sides with equal lengths. Therefore, quadrilateral KITE is a kite because two consecutive pairs of adjacent sides have equal lengths.


Examples
Kites are not just for flying on windy days; they also represent a fascinating application of geometry in the real world. The symmetrical shape of a kite, with two pairs of equal-length sides meeting at a point, is a direct application of geometric principles. Understanding the properties of kites helps in various fields, from designing stable aircraft wings to creating aesthetically pleasing patterns in art and architecture. By studying kites, we learn how geometric shapes can be both functional and beautiful.

Answered by GinnyAnswer | 2025-07-04