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gladu [14]
3 years ago
11

Give a specific example of a vector quantity. Explain why this type of quantity would be used to describe this event.

Physics
2 answers:
Whitepunk [10]3 years ago
7 0

Answer: velocity has a magnitude and a direction. This quantity is useful in every day lives in many ways. for example when you are  driving in a car, its good to know the velocity in which the car is going.

Explanation: sorry its late

nekit [7.7K]3 years ago
5 0

Answer:

Vector Quantities Increase/Decrease in Temperature - The measurement of the medium's temperature is a scalar quantity; the measurement of the increase or decrease in the medium's temperature is a vector quantity. Velocity - The measurement of the rate at which an object changes position is a vector quantity.

Explanation:

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A scooter is accelerated from rest at the rate of 8m/s
algol13

Explanation:

time=Distance/speed

t=32/8

t=4 seconds

8 0
3 years ago
CUAL DE LAS SIGUIENTES LEYES NO PERTENECEN A LOS 3 PRINCIPIOS DE NEWTON? 1.LEY DE LA ATRACCION 2.LEY FUNDAMENTAL DE LA DINAMICA
vodka [1.7K]

Answer:

La Ley de atracción no pertenece a los tres principios de Newton.

Explanation:

Las leyes de Newton son tres principios que sirven para describir el movimiento de los cuerpos, basados en un sistema de referencias inerciales (es aquél que está en reposo o se mueve con velocidad constante, es decir, no tiene aceleración).

Las 3 leyes de Newton son:

  • <em> Primera Ley o Ley de Inercia :</em> Esta ley enuncia que todo cuerpo permanece en su estado de reposo o de movimiento rectilíneo uniforme a menos que otros cuerpos actúen sobre él. Explica que para modificar el estado de movimiento de un cuerpo es necesario actuar sobre él.
  • <em>Segunda ley o Principio Fundamental de la Dinámica </em>: Esta ley dice que la fuerza que actúa sobre un cuerpo es directamente proporcional a su aceleración.  Es decir, si sobre un cuerpo actúa una fuerza, dicho cuerpo modificará su velocidad, es decir, adquirirá una aceleración. Dicha fuerza y su aceleración generada son proporcionales y están relacionadas mediante:  F=m*a donde F es la fuerza aplicada, m es la masa del cuerpo sobre el que se aplica la fuerza y a es la aceleración adquirida por dicho cuerpo.
  • <em>Tercera ley o Principio de acción-reacción </em>: Esta ley expresa que cuando un cuerpo ejerce una fuerza sobre otro, éste ejerce sobre el primero una fuerza igual y de sentido opuesto.

Entonces, <u><em>la Ley de atracción no pertenece a los tres principios de Newton.</em></u>

5 0
3 years ago
True or false all waves need a medium in order to travel
Roman55 [17]
No light does not need medium to travel.Its an electromagnetic(EM) wave.All EM waves travel independent of medium. In contrast mechanical waves need a medium,sound waves,shock waves are mechanical and they need medium to transfer energy or travel.
3 0
3 years ago
Motion is...
Natalka [10]
A chain position over a certain amount of time
7 0
4 years ago
A copper wire has a diameter of 4.00 x 10-2 inches and is originally 10.0 ft long. What is the greatest load that can be support
jek_recluse [69]

Complete question is;

A copper wire has a diameter of 4.00 × 10^(-2) inches and is originally 10.0 ft long. What is the greatest load that can be supported by this wire without exceeding its elastic limit? Use the value of 2.30 × 10⁴ lb/in² for the elastic limit of copper.

Answer:

F_max = 28.9 lbf

Explanation:

Elastic limit is simply the maximum amount of stress that can be applied to the wire before it permanently deform.

Thus;

Elastic limit = Max stress

Formula for max stress is;

Max stress = F_max/A

Thus;

Elastic limit = F_max/A

F_max is maximum load

A is area = πr²

We have diameter; d = 4 × 10^(-2) inches = 0.04 in

Radius; r = d/2 = 0.04/2 = 0.02

Plugging in the relevant values into the elastic limit equation, we have;

2.30 × 10⁴ = F_max/(π × 0.02²)

F_max = 2.30 × 10⁴ × (π × 0.02²)

F_max = 28.9 lbf

5 0
3 years ago
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