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crimeas [40]
3 years ago
15

a passenger on cruise between San Juan, Puerto Rico and Miami, Florida accidentally drops a souvenir metal cube over the side of

the boat, into the water. Each side of the metal cube measures 1 meter. The cube promptly sinks to the deepest part of the Puero Rico Trench. Once at the bottom, what pressure does the cube experience? Neglect Atmospheric Pressure. Use wikipedia to see depth of Trench!
Physics
1 answer:
Viefleur [7K]3 years ago
6 0

Answer:

P = 84.1 MPa

Explanation:

  • The pressure at the bottom of column of of salt water of height h, is given by the following expression:

       P = \rho * g * h  (1)

       where ρ = density of salt water (in Kg/m³),

       g = acceleration due to  gravity  (in m/s²)

       h = height of the column of water.

  • Replacing by their values in (1):

      P = \rho * g * h  = 1023.6kg/m3*9.8m/s2*8380m = 84.1 MPa  (2)

  • Neglecting the atmospheric pressure, the pressure on the cube at the bottom of Puerto Rico Trench is given by (2):
  • P = 84.1 MPa.
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A race car has a centripedal acceleration of 13.33M/S as it goes around a curve. If the curve is a circle with radius 30 m, what
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Explanation:

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Velocity=√(13.33×30)

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3 years ago
What does the term electron orbital describe? What does the term electron orbital describe? An electron orbital describes a thre
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Answer:

An electron orbital describes a three-dimensional space where an electron can be found 90% of the time.

Explanation:

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3 years ago
if the force moving an object points at least partially in the opposite direction of the objects motion, the work is considered
Bezzdna [24]

If the force moving an object points at least partially in the opposite direction of the objects motion, the work is considered to be negative.

<u>Explanation: </u>

Work done is the measure of displacements caused on an object by the amount of force acting on it. The work done can be positive or negative. If the direction of force acting on an object is along the direction of motion of the object then the work done is positive.

This is because, in this case the external force is helping the object to continue its state of motion. So, if the force acting on the object is in completely opposite or partially opposite direction to the direction of motion of the object, it will stop or slow down the motion of the object.

This kind of force will have negative direction to the motion of the object and hence the work done will also be negative.

7 0
3 years ago
A 14.0-g wad of sticky clay is hurled horizontally at a 90-g wooden block initially at rest on a horizontal surface. The clay st
vredina [299]

Answer:the speed of the clay immediately before impact =72.58m/s

Explanation:

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mass of the stick clay, M₁= 14.0 g = 0.014 kg

mass of the block ,M₂= 90 g = 0.09 kg

Therefore the total mass= (M₁+M₂) = 104g = 0.104 kg

Also, distance, s = 7.50 m

coefficient of friction μ= 0.650

Acceleration due to gravity ,g = 9.8 m/s²

 

Using the Work- Energy theorem,

change in kinetic energy =  work done

final kinetic energy(K₂) - initial  kinetic energy(K₁) =   force, F x coefficient of friction, μ x distance,s

The final kinetic energy is zero  because after the impact,  the block with the clay comes to a stop after 7.50m

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v²= 0.650 x 0.104x 9.8 x 7.5 / 0.5 x 0.104

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V = 9.77 m/s

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M₁ V₁ + M₂ V₂ = (M₁ + M₂ ) V

Since V₂  which is the velocity of block  is zero as the  block is initially at rest, We now have that

M₁ V₁ = (M₁ + M₂ ) V

0.014 kg x V₁ = 0.104 x 9.77

V₁=0.104 x 9.77 / 0.014

V=72.58m/s

5 0
2 years ago
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