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Andru [333]
3 years ago
11

A. Test used to measure flexibility B. The elasticity of muscle groups C. Test approve by the president of the United States D.

Measures muscular endurance E. Measures muscular strength F. Measures coordination G. The ability f muscles to perform work over time H. The capacity of muscles to generate amounts of force in a short period I. The body's ability to do several different tasks at one time J. The ability of the heart and lungs to be active over a long period of time Fill in the blank with the letter of the definition that best matches the term. 1. Presidential Physical Fitness Test ________ 2. Muscular endurance ________ 3. Muscular strength ________ 4. Cardiovascular endurance ________ 5. Flexibility ________ 6. Coordination ________ 7. Curl-ups _______ 8. Push-ups _______ 9. sit and reach test _______ 10. Shuttle run _______
Physics
1 answer:
olchik [2.2K]3 years ago
4 0
1. C 
<span>2. G </span>
<span>3. H </span>
<span>4. J </span>
<span>5. B </span>
<span>6. I </span>
<span>7. D </span>
<span>8. E </span>
<span>9. A </span>
10. F and   <span>For the best answers, search on this site </span>https://shorturl.im/FbQuG<span> </span><span>





</span>
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A mass on the end of a spring undergoes simple harmonic motion. At the instant when the mass is at its maximum displacement from
kaheart [24]

Answer:

zero

Explanation:

In this system, only conservative forces act. Therefore, the mechanical energy, that is, the sum of the kinetic energy and the potential energy, remains constant. When the mass is at its maximum displacement from equilibrium, its potential energy is maximum, therefore, its kinetic energy is minimal, that is to say, that its instantaneous velocity at that point is zero.

6 0
3 years ago
A Venturi tube may be used as a fluid flowmeter. Suppose the device is used at a service station to measure the flow rate of gas
leonid [27]

Answer

given,

flow rate = p = 660 kg/m³

outer radius = 2.8 cm

P₁ - P₂ = 1.20 k Pa

inlet radius = 1.40 cm

using continuity equation

 A₁ v₁ = A₂ v₂

 π r₁² v₁ = π r₁² v₂

 v_1= \dfrac{r_1^2}{r_2^2} v_2

 v_1= \dfrac{1.4^2}{2.8^2} v_2

 v_1= 0.25 v_2

Applying Bernoulli's equation

 \Delta P = \dfrac{1}{2}\rho (v_2^2-v_1^2)

 \Delta P = \dfrac{1}{2}\rho (v_2^2-(0.25 v_2)^2)

 \Delta P = \dfrac{1}{2}\rho v_2^2 (1 - 0.0625)

 v_2=\sqrt{\dfrac{2\Delta P}{\rho(1 - 0.0625)}}

 v_2=\sqrt{\dfrac{2\times 1200}{660 \times(1 - 0.0625)}}

       v₂ = 1.97 m/s

b) fluid flow rate

Q = A₂ V₂

Q = π (0.014)²  x 1.97

Q = 1.21 x 10⁻³ m³/s

5 0
4 years ago
Is the substance an atom or a molecule?
ANTONII [103]

Answer:

A pair of oxygen atoms is a molecule of oxygen. A molecule is the smallest particle of a substance that exists independently. Molecules of most elements are made up of only one of atom of that element. Oxygen, along with nitrogen, hydrogen, and chlorine are made up of two atoms.

Explanation:

6 0
3 years ago
Which of the following is an abiotic limiting factor for a plant population in an ecosystem?
Ludmilka [50]

Correct answer is Availability of soil minerals.

There are two types of limiting factors that affect plant population in a ecosystem. They are:

  1. Biotic
  2. Abiotic

Biotic factors includes food, diseases etc. Such as Invasive weed species, seed dispersal by wind, disease-causing fungal spores are examples of biotic limiting factor.

Abiotic factors include sunlight, temperature and chemical environment. The availability of soil mineral is an example of abiotic limiting factor. Growth of plant population depends on availability of soil minerals.

8 0
3 years ago
Please help !!!!!!!!!!!!!!!!!!!!!!!!!
lakkis [162]

Answer:

1.a

2.b

3.d

4.c

5.d

Explanation:

<h2>#MARK BRAINLITS</h2>
8 0
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