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ololo11 [35]
4 years ago
14

El momento lineal de un coche que viaja hacia el norte a 20m/s es distinto al momento lineal del mismo auto viajando hacia el es

te con la misma rapidez.
Physics
1 answer:
Jobisdone [24]4 years ago
4 0

Explanation:

The momentum of any object is given by the product of mass and velocity with which it is moving i.e.

p = mv

Momentum is a vector quantity. It means we can resolve it into rectangular components.

If the car is moving with a speed of 20 m/s in North direction, its momentum is given by :

p_y=20m\ \hat{j}\ kg-m/s .....(1)

If the car is moving with a speed of 20 m/s in East direction, its momentum is given by :

p_x=20m\ \hat{x}\ kg-m/s ....(2)

It is clear from equation (1) and (2) that the magnitude of momentum is same but the direction of momentum is different in both cases.

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The initial momentum and the vertical and horizontal component
tamaranim1 [39]
Momentum = mass * velocity

p = mv

p = 1.5 kg * 40 ms^-1

p = 60 kgm/s

To find components of a vector:

px = p * cos(theta)
px = 60 * cos(30)
px = 51.96 = 52 (rounded to two significant digits)

py = p * sin(theta)
py = 60 * sin(30)
py = 30

He initial momentum is 60kgm/s
The horizontal component is 52 kgm/s
The vertical component is 30 kgm/s
8 0
3 years ago
The Cassegrain design provides more compact (shorter) telescopes. Why? (Examine figures 2.4.2 and 2.4.3). The shorter design is
Ipatiy [6.2K]

Answer:

Because the light reflects multiple times until it gets to the Cassegrain focus.

Explanation:

The Cassegrain design can be seen in a reflecting telescope. In this type of design the light is collected by a concave mirror, and then intercepted by a secondary convex mirror, and sends it down to a central opening in the primary mirror (concave mirror), in which a detector is placed (Cassegrain focus)

Since, the light is reflected many times due to Cassegrain design, that leads to shorter telescopes.                    

5 0
3 years ago
Which of the following describes the difference between the classes of levers?
Semenov [28]
<span>the placement of the fulcrum</span>
5 0
4 years ago
Which type of electromagnetic waves make up the colors of a rainbow seen after a storm?
Step2247 [10]
Visible light waves are the type of electromagnetic waves that make up the colors of the rainbow, because the rainbow is visible to us.
3 0
4 years ago
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What is a pattern of motion in the solar system
Julli [10]
All the planets is the answer
3 0
3 years ago
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