A compound
Explanation:
A compound machine is the combination of two or more simple machines.
An example is bicycle.
- A simple machine is a device that is used to increase the magnitude of force.
- It is a basic mechanical unit.
- Examples are inclined planes, lever systems, wheel and axle.
- A compound machine is a combination of these simple machines.
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Answer:
the motion of the coin taping the balloon is the balloon squshing down
<span>The correct answer is C. 60. A more precise answer would be around 70, but this is the closest one we have. As a matter of fact, 50% of the net income is made by only 5% of companies, while the remaining US corporations raise the bar to around 70. These 5% are mostly conglomerates that deal in all areas of business, from food to cosmetics to furniture.</span>
Answer:
The radius of the wetter area expands at a rate of 
milimeters per second when radius is 150 milimeters.
Explanation:
From Geometry we remember that area of a circle is described by this expression:
(Eq. 1)
Where:
- Radius of the circle, measured in milimeters.
- Area of the circle, measured in square milimeters.
Then, the rate of change of the area in time is derived by concept of rate of change, that is:
(Eq. 2)
Where:
- Rate of change of radius in time, measured in milimeters per second.
- Rate of change of area in time, measured in square milimeters per second.
Now the rate of change of radius in time is cleared within equation above:
If we know that 
and 
, then the rate of change of radius in time is:
![\frac{dr}{dt} = \left[\frac{1}{2\pi\cdot (150\,m)} \right] \cdot \left(4\,\frac{mm^{2}}{s} \right)](https://tex.z-dn.net/?f=%5Cfrac%7Bdr%7D%7Bdt%7D%20%3D%20%5Cleft%5B%5Cfrac%7B1%7D%7B2%5Cpi%5Ccdot%20%28150%5C%2Cm%29%7D%20%5Cright%5D%20%5Ccdot%20%5Cleft%284%5C%2C%5Cfrac%7Bmm%5E%7B2%7D%7D%7Bs%7D%20%5Cright%29)
The radius of the wetter area expands at a rate of milimeters per second when radius is 150 milimeters.
Hey there! :D
Most good electrical conductors are metal. Actually, rubber is used around wires as an insulator to help the current stay in a direct flow. Wood and plastic don't handle current very well, as it will most likely burn the wood and melt the plastic.
"D" Copper is the best answer.
I hope this helps!
~kaikers <span />
