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2 years ago

What is always moving never tired and dreaded if they are not admired

Physics

2 answers:

g100num [7]2 years ago

6 0

<h2>Answer:</h2>

The moon

<h2>Explanation:</h2>

Moon always keep moving and people usually relate it to the beauty of their loved ones. Even if the moon is not admired for its beauty, it never stops moving. It is never tired of its motion so the best answer for this riddle is MOON.

Gelneren [198K]2 years ago

5 0

The correct answer is clouds.

Clouds are always on the move. They never ever stop no matter what. They keep moving on in the sky.

But because they are not a living substance like humans or animals, they never get tired of it. Its like their job. Just like the wind.

Clouds might get admired for their beauty but never for their forever movement. So the answer for this riddle is the clouds.

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What makes some collisions elastic and others inelastic?

Veseljchak [2.6K]

A perfect elastic collision is defined as one in which there is no loss of kinetic energy in the collision. An inelastic collision is one in which part of the kinetic energy is changed into another form of energy in the collision. Well hope this answers your question :)

7 0

2 years ago

Read 2 more answers

A uniform rectangular plate is hanging vertically downward from a hinge that passes along its left edge. By blowing air at 11.0

Serjik [45]

Answer:

The airspeed must be 7.78 m/s for the rectangular plate kept at 30°.

Explanation:

By looking at the images below wee see that the airspeed on one side of the rectangular plate decreases the statical pressure over this side. Since over the downside, the pressure still bein the atmospheric pressure. This difference in pressure produces a lift force in the plate. The list force is the net force obtained between the difference of the forces that produce the pressure over the upside and the downside:

$F_{lift}=F_{up} - F_{dw}=0.5*p*V^2$

Where up and down relate to what movement the forces produce. And p and V are the respective air density and velocity.

When the plate is kept horizontal the lift force balance the moment due to the weight of the plate and considering that both forces act at the same point:

$F_{lift}=0.5*p*V^2=W$

By replacing the known values it is possible to find the plate's weight:

$F_{lift}=0.5*1.2 \frac{kg}{m^{3}}*(11 m/s)^2=W$

$W=72.6 N$

When the plate kept to 30° from the vertical the moment equation balance is written as:

$F_{lift}=0.5*p*V^2=W*sen(30\°)$

The sine of 30° is due to the weight is 30° oriented, therefore the new value for the airspeed is:

$V=\sqrt(W*sen(30\°)/0.5p)$

$V=\sqrt(\frac{72.6 N * 0.5}{0.5*1.2 kg/m^3})$

$V=\sqrt(60.5 \frac{N}{kg/m^3})$

$V=\sqrt(60.5 \frac{kg.m/s^2}{kg/m^3})$

$V=\sqrt(60.5 \frac{m^2}{s^2})$

$V= 7.78 m/s$

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2 years ago

Which of the following statements is correct? Which of the following statements is correct? The more a muscle shortens, the more

NeX [460]

The correct answer are

a) "The number of muscle fibers best determines how powerful a muscle will be"

b) "The more a muscle shortens, the more power it generates."

Reason :

Muscle fiber in longitudinal directions generate more power

Multipennate muscles do not produce much power because the tendon branches within muscle .

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2 years ago

What types of atoms compose each type of compound – only metals

Over [174]

Answer:

Key Takeaways

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

Explanation:

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2 years ago

Which equation could be rearranged to calculate the frequency of a wave?

777dan777 [17]

Answer:

wavelength = speed/frequency

Explanation:

Required

Determine which of the options can be used to calculate frequency

The relationship between wavelength, speed and frequency is as follows;

$Frequency = \frac{Wave\ Speed}{Wave\ Length}$ ---- Equation 1