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3 years ago

Which statement BEST describes the benefits of muscular fitness training?

1 answer:

6 0

I think it is A <span>High levels of muscular fitness can improve your self-image and improve or prevent chronic diseases such as diabetes, osteoporosis, and cardiovascular disease.</span>

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A wheelbarrow is a complex machine that combines which simply marchines?

koban [17]

It's most likely the combination of a bucket and the wheel.

4 0

2 years ago

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What is potential

DaniilM [7]

Its b, energy waiting to be used

4 0

2 years ago

One violin creates a sound whose intensity level is 60dB. Find the intensity level of 16 violins, each playing at this intensity

Yanka [14]

Answer:

72.04 dB.

Explanation:

The intensity level of 60dB corresponds to the sound intensity $I$ given by the equation

$60dB = 10log(\dfrac{I}{I_0} )$

where $I_0 = 1*10^{-12}W/m^2$

solving for $I$ we get:

$6 = log(\dfrac{I}{I_0} )$

$10^6 =\dfrac{I}{1*10^{-12}}$

$\boxed{I = 1*10^{-6} W/m^2}$

Now, when 16 violins are playing the intensity $I$ becomes

${I = 16(1*10^{-6} W/m^2)$

which on the decibel scale gives

$dB = 10log(\dfrac{16*10^{-6}}{1*10^{-12}} )$

$dB = 72.04\: dB$ .

Thus, playing 16 violins together gives the intensity level of 72 dB.

8 0

2 years ago

The three elements of emotion are?

Alona [7]

Answer: Physical component- state of physiological arousal triggered by autonomic nervous system

Behavioral component- outward expression of emotion, including facial expression and behavior

Cognitive component- appraisal of the situation determine which emotion we are experiencing and why.

Explanation:

hope that helps :)

5 0

2 years ago

g A wheel of diameter 8.0 cm has a cord of length 6.0 m wound around its periphery. Starting from rest, the wheel is given a con

sveticcg [70]

To solve this problem it is necessary to apply the equations related to the description of the tangential and angular movement.

The displacement where the speed and acceleration is related is given by the equation:

$x = v_0t+\frac{1}{2}at^2$

Where

$v_0 =$ Initial velocity (0 because start from rest)

t = time

a = Acceleration

We have angular acceleration but not tangential acceleration. Tangential acceleration can be obtained through the relationship

$a = r\alpha \rightarrow r = \frac{diameter}{2}$

$a = \frac{0.08}{2}(3)$

$a = 0.12m/s^2$

And we have also that the displacement is

$x = 6m$

Now replacing,

$x = v_0t+\frac{1}{2}at^2$

$6 = 0*t+\frac{1}{2}(0.12)t^2$

$6 = \frac{1}{2}(0.12)t^2$

$t = 10s$

Therefore will take the cord to unwind around 10s

7 0

2 years ago

Read 2 more answers