Physics

Physics, 05.07.2019 22:00, ayoismeisalex

Define scalar and vector quantities

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Physics, 03.07.2019 01:30, starboy3506

Identify the following quantities as scalar or vector: the speed of a snail, the time it takes to run a mile, the free-fall acceleration. a. vector, scalar, scalar c. vector, scalar, vector b. scalar, scalar, vector d. scalar, vector, vector

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Physics, 05.07.2019 22:00, leriscepowell9004

Define scalar and vector quantities

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Physics, 22.08.2019 06:30, adam1299

The dot or scalar product of two (3d) vec- tors ⃗a = ⟨a1,a2,a3⟩ and ⃗b = ⟨b1,b2,b3⟩ is defined as 3 ⃗a • ⃗b = a i b i = a 1 b 1 + a 2 b 2 + a 3 b 3 . i=1 in 3d euclidean space, the scalar product has a geometric interpretation, given by ⃗a • ⃗b = ∥ ⃗a ∥ ∥ ⃗b ∥ c o s θ , where θ is the angle between ⃗a and ⃗b and the norm(length) of a vector ∥⃗a∥ is defined by ∥ ⃗a ∥ = √ ⃗a • ⃗a . in words, the scalar product of two vectors can be thought of as the product of the magnitude of ⃗a with the magnitude of the projection of ⃗b onto the direction of ⃗a. it is used to calculate the product of vector quantities when only the parallel components of each vector contribute (e.g., work = force • displacement). let ⃗a = ⟨14, 10.5, 0⟩ and ⃗b = ⟨4.62, 9.45, 0⟩. calculate ⃗a • ⃗b.

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Geography, 17.10.2019 04:50, ehklu1226

Which of the following quantities is properly identified as being scalar or vector? a. 15 pounds - vector b. 1 mile south - scalar c. 100 meters west - vector d. 76 miles per hour - vector

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