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e-lub [12.9K]
3 years ago
14

A cannon sits on the edge of a castle wall that is 15 m above the ground. A cannon ball leaves the cannon with an initial veloci

ty of 25 m/s at 30o to the horizontal. After 3.0 s What is the y component of the velocity?
Physics
1 answer:
Juli2301 [7.4K]3 years ago
4 0

Answer:

a

Explanation:

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F=ma
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A 2.5 g marshmallow is placed in one end of a 40 cm pipe, as shown in the figure above. A person blows into the left end of the
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These diagrams represent two types of tectonic plate boundaries
trapecia [35]

Convergent boundaries are caused by the collision of two plates and can originate volcanoes. Transforming boundaries produce fractures by displacement. <em>The correct option is D. Type A boundaries have fewer volcanoes. </em>

----------------------------------------

The crust -the outermost layer of the earth- is divided into many plates that move over the mantle.

These plates are limited by three types of ridges or borders that differ in the movement they produce.

Boundaries types:

I. Divergent:

  • This boundary occurs when two plates separate and molten material rises from the mantle creating a new crust.

  • The hot material creates a new seabed between the separating plates, expanding the sea bottom.

II. Convergent.

  • Collision area between two plates.

  • Two oceanic plates might collide, or one oceanic plate with a continental one.

  • In this last case, the oceanic crust sinks under the continental plate, and magma rises to the surface by crevices.

  • The thicker and older plate subduces under the other plate.

  • Collisions create volcanic arches and continental arches.

III. Transforming.

  • The plates slide laterally with each other, and they are usually called faults.

  • It is associated, in general, with the oceanic ridge, although it might also occur in the continental plate.

  • No rocky material is either destroyed or formed.

  • When the plates move and produce a displacement of one transforming limits from side to side, earthquakes occur.

  • The movement breaks the crust and originates pronounced fractures.

In the attached images, we can see

  • image A representing transforming boundaries,
  • image B representing Convergent boundaries.

Image B is the one that can originate volcanoes because transforming boundaries only produce fractures.

So the correct option would be D.

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Learn more about convergent, divergent and transforming boundaries at

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5 0
2 years ago
Pls someone help me pls…. and pls explain to me how
slavikrds [6]

Answer:

1.12 × 10⁴ m/s

Explanation:

The escape velocity of the object v = √(2GM/R) where G = gravitational constant = 6.67 × 10⁻¹¹ Nm²/kg², M = mass of the Earth = 6 × 10²⁴ kg and R = radius of the Earth = 6.4 × 10⁶ m

Since v = √(2GM/R)

Substituting the values of the variables into the equation, we have

v = √(2GM/R)

v = √(2 × 6.67 × 10⁻¹¹ Nm²/kg² × 6 × 10²⁴ kg/6.4 × 10⁶ m)

v = √(13.34 × 10⁻¹¹ Nm²/kg² × 6 × 10²⁴ kg/6.4 × 10⁶ m)

v = √(80.04 × 10⁻¹¹ × 10²⁴Nm²/kg/6.4 × 10⁶ m)

v = √(80.04 × 10¹³Nm²/kg ÷ 6.4 × 10⁶ m)

v = √(80.04 ÷ 6.4 × 10¹³ ÷ 10⁶Nm/kg)

v = √(12.50625 × 10⁷ Nm/kg)

v = √(125.0625 × 10⁶ Nm/kg)

v = 11.18 × 10³ m/s

v = 1.118 × 10 × 10³ m/s

v = 1.118 × 10⁴ m/s

v ≅ 1.12 × 10⁴ m/s

8 0
3 years ago
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