All categories

3 years ago

Everyone will experience most emotions at some point in their life. Please select the best answer from the choices provided.

Physics

1 answer:

Bezzdna [24]3 years ago

5 0

The answer is true because people go through a lot of things.

You might be interested in

The spectrum produced by a prism or a raindrop is evidence that the average speed of light in the material depends on the light'

Alja [10]

The correct answer for the question that is being presented above is this one: "B. color." The spectrum produced by a prism or a raindrop is evidence that the average speed of light in the material depends on the light's color. White light is being refracted into different colors.

4 0

3 years ago

This part of the electromagnetic spectrum can be used to generate power. (2 points) A: gamma rays B: radio waves C: microwaves D

ANTONII [103]

A) gamma rays

good luck

6 0

3 years ago

When a sound wave passes from air into water, what properties of the wave will change?

Alja [10]

<span>both the speed of the wave and the wavelength
- The frequency does not change, but the speed does. If that is true, then the wavelength must also change.</span>

3 0

3 years ago

Two identical objects are moving directly toward one another at the same speed what is the the total kinetic energy of the syste

galina1969 [7]

<span>Just add the two kinetic energies;
E = (1/2)mv^2 + (1/2)mv^2</span>

6 0

3 years ago

A centrifuge has an angular velocity of 3,000 rpm, what is the acceleration (in unit of the earth gravity) at a point with a rad

Anna71 [15]

Answer:

$a_{r} = 1006.382g \,\frac{m}{s^{2}}$

Explanation:

Let suppose that centrifuge is rotating at constant angular speed, which means that resultant acceleration is equal to radial acceleration at given radius, whose formula is:

$a_{r} = \omega^{2}\cdot R$

Where:

$\omega$ - Angular speed, measured in radians per second.

$R$ - Radius of rotation, measured in meters.

The angular speed is first determined:

$\omega = \frac{\pi}{30}\cdot \dot n$

Where $\dot n$ is the angular speed, measured in revolutions per minute.

If $\dot n = 3000\,rpm$ , the angular speed measured in radians per second is:

$\omega = \frac{\pi}{30}\cdot (3000\,rpm)$

$\omega \approx 314.159\,\frac{rad}{s}$

Now, if $\omega = 314.159\,\frac{rad}{s}$ and $R = 0.1\,m$ , the resultant acceleration is then:

$a_{r} = \left(314.159\,\frac{rad}{s} \right)^{2}\cdot (0.1\,m)$

$a_{r} = 9869.588\,\frac{m}{s^{2}}$

If gravitational acceleration is equal to 9.807 meters per square second, then the radial acceleration is equivalent to 1006.382 times the gravitational acceleration. That is:

$a_{r} = 1006.382g \,\frac{m}{s^{2}}$

6 0

3 years ago