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guajiro [1.7K]
4 years ago
7

Depending on circumstances, there are times when divers may wish to be positively, negatively or neutrally buoyant. True. False.

Physics
1 answer:
ser-zykov [4K]4 years ago
7 0

Answer:

True

Explanation:

Buoyancy is the most important factors for divers. All they do underwater is to observe the life down there but they also have some other work. However, divers may want to be negatively buoyant when they want to go on deep exploration. When they reach a destination, they may want to observe and neutral buoyancy then will be useful. When they want to go back on surface, they’ll utilize positive buoyancy.

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A particle moves along the x-axis with velocity given by v(t)=3t2+6t for time tâ¥0. If the particle at position x=2 at time t=0,
sergey [27]

Answer:

b) 6

Explanation:

Given

v(t)=3t²+6t

X(0) = 2

X(1) = ?

Knowing that

v(t)=3t²+6t = dX/dt

⇒ ∫dX = ∫(3t²+6t)dt

⇒ X - X₀ = t³ + 3t²

⇒ X(t) = X₀ + t³ + 3t²

If  X(0) = 2

⇒  X(0) = X₀ + (0)³ + 3(0)² = 2

⇒  X₀ = 2

then we have

X(t) = t³ + 3t² + 2

when

t = 1

X(1) = (1)³ + 3(1)² + 2

X(1) = 6

8 0
3 years ago
Read 2 more answers
A block is at rest on a incline plane as shown in the diagram.As angle is increased, the componet of the blocks weight parallel
Elodia [21]

Answer:

The component of block weight parallel to the plane, Wₓ = W cosθ

Explanation:

Let the weight of the block due to gravitation is W

The direction of the weight is vertically down

Let θ be the angle formed with the vertical weight of the block and the incline.

Taking two components of weight one along the vertical weight and another component perpendicular to it.

Then the component `of weight long the parallel of the plane is

                                   Wₓ = W cosθ        

6 0
3 years ago
How do you think the formation of new stars is related to supernovas and planetary nebulae?
kogti [31]
By God wanting them to be the same kinda
5 0
4 years ago
Match the following rocks with the correct type.
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I\B
2/A
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6 0
4 years ago
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insens350 [35]
We can calculate his resultant speed.

Resultant speed is:
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alpha = 20,8 degrees

Answer is 20,8 degrees
8 0
4 years ago
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