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Mademuasel [1]
2 years ago
6

Describe how a wheel and axle work?

Physics
1 answer:
andrezito [222]2 years ago
7 0

A weally works when you pull something and a axle is something that you can push

Explanation:

I hope this helps

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In some circumstances, it is useful to look at the linear velocity of a point on the blade. The linear velocity of a point in un
mihalych1998 [28]

Answer:

v=wr

Explanation:

<u>Tangent and Angular Velocities</u>

In the uniform circular motion, an object describes the same angles in the same times. If \theta is the angle formed by the trajectory of the object in a time t, then its angular velocity is

\displaystyle w=\frac{\theta}{t}

if \theta is expressed in radians and t in seconds the units of w is rad/s. If the circular motion is uniform, the object forms an angle 2\theta in 2t, or 3\theta in 3t, etc. Thus the angular velocity is constant.

The magnitude of the tangent or linear velocity is computed as the ratio between the arc length and the time taken to travel that distance:

\displaystyle v=\frac{\theta r}{t}

Replacing the formula for w, we have

\boxed{ v=wr}

4 0
3 years ago
Dont know whether its b or c. (cuz for sure it transports energy)
masha68 [24]

Sound waves are a type of classical waves and so they transport only energy without transporting matter through the medium.

6 0
3 years ago
A video store owner noticed a 5% drop in rentals of DVDs after raising her prices 10%. Are DVD rentals
lukranit [14]

Answer:

Inelastic

Explanation:

The price elasticity of demand is the degree of responsiveness of demand for a product or service to a unit change in price. The demand for a product is said to be elastic when a change in price has a relatively large effect on the demand for the product, unitary when there is a percentage change in price brings about an equal percentage change in the demand for the product, and inelastic when a change in the price of a product brings about a smaller change in the demand for the product.

<em>In the case of the DVD rentals, a 10% increase in price brought about only a 5% drop in demand. Hence, the demand for DVD rentals is said to be inelastic because a change in the price brought about a smaller change in the demand for DVD rentals.</em>

8 0
3 years ago
An Airplane taxis onto the runway going at 10 m/s. If it can accelerate steady at 3
kirza4 [7]

Answer: 1333 m

the length of runway it will need is S = \frac{90^{2}-10^{2}  }{2.3}=1333 (m)

Explanation:

4 0
3 years ago
For an unknown sample of the experiment, students measure 1679 counts when they first receive their sample and 1336 counts four
Tpy6a [65]

Answer:

Half life of the sample, t_{\frac{1}{2}} = 12.15 min

Given:

Initial amount, N = 1679

Final count of amount, N' = 1336

Time elapsed, t = 4 min = 240 s

Solution:

Now, To calculate the half life, using the relation:

N' = N(\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}}

Now, substituting the given values in the above mentioned formula:

\frac{1336}{1679} = (\frac{1}{2})^{\frac{4}{t_{\frac{1}{2}}}}

0.796 = 0.5^{\frac{4}{t_{\frac{1}{2}}}}

Taking log on both the sides:

ln(0.796) = \frac{4}{t_{\frac{1}{2}}}ln(0.5)

0.329 = 4t_{\frac{1}{2}}

t_{\frac{1}{2}} = 12.15 min

6 0
3 years ago
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