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3 years ago

Give at least 4 human activities which demonstrate the involvement of inertial frame of reference

1 answer:

7 0

One clearcut example of an inertial reference frame is an isolated spaceship, far, far away from the Earth, the Sun, the Milky Way Galaxy, and all other massive objects. Fred places a blue ball into a claw at the left end of the ship, and red ball into a claw at the right end of the ship.

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A wheel rotates about a fixed axis with a constant angular acceleration of 4.0 rad/s2. The diameter of the wheel is 40 cm. What

Ray Of Light [21]

Answer:

v = 0.42m/s

Explanation:

In order o calculate the linear speed of the point at the border of the wheel, you first take into account that the total acceleration of such a point is given by:

$a_{total}^2=a_r^2+a_t^2$ (1)

atotal: total acceleration = 1.2m/s^2

ar: radial acceleration of the wheel

at: tangential acceleration

The tangential acceleration is also given by:

$a_t=r\alpha$ (2)

r: radius of the wheel = (40cm/2 )= 20cm = 0.2m

α: angular acceleration = 4.0rad/s^2

You replace the expression (2) into the expression (1) and solve for the radial acceleration:

$a_{total}^2=a_r^2+(r\alpha)^2\\\\a_r=\sqrt{(a_{total})^2-(r\alpha)^2}\\\\a_r=\sqrt{(1.2m/s^2)^2-((0.2m)(4.0rad/s^2))^2}=0.894\frac{m}{s^2}$

Next, you use the following formula for the radial acceleration and solve for the linear speed:

$a_r=\frac{v^2}{r}\\\\v=\sqrt{ra_r}=\sqrt{(0.2m)(0.894m/s^2)}=0.42\frac{m}{s}$

The linear speed of the point at the border of the wheel is 0.42m/s

5 0

3 years ago

P.E QUESTION

vredina [299]

The answer is 5 maybe

4 0

3 years ago

all of the following methods are ways to correct a run-on sentence except ,placing a semicolon between the compete sentences.put

olchik [2.2K]

All of the following methods are ways to correct a run-on sentence except: Putting a comma in between the complete sentences.

One of the uses of semi-colon is to separate two complete or independent sentences. A conjunction can also be used such as: and, however and but, to connect two complete sentences and transform them into a compound sentence.

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3 years ago

How much work is done on 10.0C of charge to move it through a potential difference of 9V in 10s?

Norma-Jean [14]

Here is the link with ans on it
https://moorsscience.wikispaces.com/file/view/chapter+12+answers.pdf
hope it helps

5 0

3 years ago

With the frequency set at the mid-point of the slider and the amplitude set at the mid-point of the slider, approximately how ma

Gre4nikov [31]

Answer:

correct answer is b

Explanation:

The frequency of a wave depends on the properties of medium density and the elasticity properties change the amplitude depends on the energy carried by the wave, that is, the amplitude is proportional to the height of the wave (oscillation).

Consequently the amplitude of independent of the frequency because it depends on different factors.

Therefore when changing the amplitude the wavelength remains constant

the correct answer is b

8 0

3 years ago

Give at least 4 human activities which demonstrate the involvement of inertial frame of reference​

Give at least 4 human activities which demonstrate the involvement of inertial frame of reference