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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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1.Which of the following is the best example of motion?A.Waving your armsB.Tossing and turning in your bedC.Walking from home to

vlabodo [156]

Answer:

Explanation:

4 0

3 years ago

The Curiosity rover now on Mars analyzed rocks and found magnesium to have the following isotopic composition.

emmasim [6.3K]

Answer:

A. number of neutrons of Magnesium Mg = 13

B. The average mass of Mg = 22.29 amu

C. the magnesium composition on Mars is not the same as that on Earth.

Explanation:

Isotopes are atoms with the same atomic number but different mass number. This is due to the difference in mass of the neutrons.

The atomic number of Magnesium Mg = 12

The atomic number of an element is the number of protons present in the atomic nucleus of the element

i.e Atomic number = number of protons = 12

The mass number of an element is the sum of the protons and neutrons in the atomic nucleus of the element.

Mass number = number of protons + number of neutrons

Given that the mass number of Mg = 25

Then;

25 = 12 + number of neutrons

25 - 12 = number of neutrons

13 = number of neutrons

number of neutrons of Magnesium Mg = 13

B. What is the average atomic mass of magnesium in these rocks?

The average atomic mass of an element which exhibit isotopy is the average mass of its various isotopes as they occur naturally in any quantity of the element.

Therefore the average atomic mass of magnesium can be calculated as:

= $\mathtt{\dfrac{(23.9872 \times 79.70) + ( 24.9886 \times 10.13) + (25.9846 \times 10.17) }{79.7 + 10.13 +10.17}}$

= $\mathtt{\dfrac{(1911.77984) + ( 53.134518) + (264.263382) }{100}}$

= $\mathtt{\dfrac{2229.17774 }{100}}$

The average mass of Mg = 22.29 amu

C. Is the magnesium composition on Mars the same as that on Earth? Explain.

The average atomic weight of magnesium on Earth is said to be 24.305 amu while that of Mars is 22.29 amu.

There difference in the average atomic weight result into difference in their composition. Therefore,the magnesium composition on Mars is not the same as that on Earth.

7 0

3 years ago

When you catch a baseball, what kind of work do you do, negative or positive? By catching the baseball, what do you change? Does

bagirrra123 [75]

Negative energy by catching it. Changes the force and movement of the baseball. Loses energy. Kinetic energy

3 0

3 years ago

Read 2 more answers

Water flows along a streamline down a river of constant width. Over a short distance, the water slows from speed v to v/3. Which

kvasek [131]

Answer:

a. It became deeper by a factor of 3.

Explanation:

What we have is water flowing down a river with constant width. The water slows from speed v to v3 over a shirt distance

Using the equation of continuity

A1V1 = A2V2 ----1

A1 is the area of rectangle

V1 is the velocity of water

Area of rectangle = length x width

We rewrite equation 1 as

λ1w1v1 = λ2w2v2

We have w1 = w2

λ1v1 = λ2v2

λ1*v1 = λ2*v/3

λ1 = λ2/3

So it becomes deeper by a factor of 3

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3 years ago

Question 12

Natali5045456 [20]

Answer:

D 500 N

Explanation:

As the velocity is constant the scale reads the same whether at rest, or at a fixed velocity. The only thing that would make the scale read differently would be a vertical acceleration.

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3 years ago