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2 years ago

What is the difference between passive and active range of motion

Physics

1 answer:

forsale [732]2 years ago

6 0

Answer:

Passive range of motion can be defined as what is achieved when an outside force, such as a therapist, causes movement of a joint. It is usually the maximum range of motion. Active range of motion is what can be achieved when opposing muscles contract and relax, resulting in joint movement

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What is the definition of bacteria ?

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Bacteria <span>are very small </span>organisms<span>.</span>

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3 years ago

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A ball is tossed straight up from the surface of a small, sphericalasteroid with no atmosphere. The aball rises to a height equa

Anastaziya [24]

Answer:

1. 3) only a constant gravitation force that acts downward

2. b) Equal to the accleration at the surface of the asteroidc)

Explanation:

In absence of atmosphere, the force that will act on the steroid is the force of gravity due to asteroid.

Gravitational force is a long range force acting always attractive in nature.

It is a contact-less field force which does not requires a medium.

Mathematically given as:

$F=G.\frac{M_1.M_2}{R^2}$

where:

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$R=$ radial distance between the two objects.

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3 years ago

What would happen if you use a thicker wire around the iron nail of an electromagnet? (thats the whole question)

puteri [66]

Answer:

When we have a current I, we will have a magnetic field perpendicular to this current.

Then if we have a wire in a "spring" form. then we will have a magnetic field along the center of this "spring".

Now suppose we put an iron object in the middle (where the magnetic field is) then we will magnetize the iron object.

Of course, the intensity of the magnetic field is proportional to the current, given by:

B = (μ*I)/(2*π*r)

Where:

μ is a constant, I is the current and r is the distance between to the current.

Now remember that for a resistor:

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R is the resistance, ρ is the resistivity, which depends on the material of the wire, L is the length of the wire, and A is the cross-section of the wire.

If we increase the area of the wire (if we use a thicker wire).

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Now, if we use a thicker wire, then the cross-section area of the wire increases.

Notice in the resistance equation, that the cross-section area is on the denominator, then if we increase the area A, the resistance decreases.

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If the current increases, the magnetic field increases, which means that we will have a stronger electromagnet.

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The centripetal force, Fc, is calculated through the equation,
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Answer:

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