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sammy [17]
3 years ago
15

Which Quantity is a vector Quantity? A] Acceleration B] Mass C] Speed D] Volume

Physics
2 answers:
vlabodo [156]3 years ago
4 0
Well I am positive that the answer is B

Readme [11.4K]3 years ago
4 0

Answer:

Acceleration is a vector quantity.

Explanation:

The quantities that have both magnitude and direction are called vector quantities. Vector quantities follows the law of vector addition, subtraction, division, multiplication.

Out of the given options acceleration is a vector quantity. It has both magnitude and direction.

On the other hand, mass, speed and volume is a scalar quantity. These quantities have only magnitude.

Hence, the correct option is (A) "acceleration".

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10. Mario is making chocolate. In part of the chocolate-making process, he changed the phase from a liquid to a solid. What happ
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B

Explanation:

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2 years ago
Starting from rest, a 2-m-long pendulum swings from an angleof
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Answer:

D.) 1m/s

Explanation:

Assume the initial angle of the swing is 12.8 degree with respect to the vertical. We can calculate the vertical distance from this initial point to the lowest point by first calculate the vertical distance from this point the the pivot point:

L_1 = L*cos(12.8) = 2*0.975 = 1.95 m

where L is the pendulum length

The vertical distance from the lowest point to the pivot point L_2 is the pendulum length 2m

this means the vertical distance from this initial point to the lowest point is simply:

L_3 = L_2 - L_1 = 2 - 1.95 = 0.05 m

As the pendulum travel (vertically) from the initial point to the bottom point, its potential energy is converted to kinetic energy:

E_p = E_k

mgh = mv^2/2

where m is the mass of the pendulum, g  = 10 m/s2 is the constant gravitational acceleration, h = 0.05 is the vertical it travels, v is the pendulum velocity at the bottom, which we are trying to solve for.

The m on both sides of the equation cancel out

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so D is the correct answer

5 0
3 years ago
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