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soldier1979 [14.2K]
3 years ago
7

I need a science fair project that doesn't need anything on the pic and it can be about any subject thanks.

Physics
1 answer:
tigry1 [53]3 years ago
7 0

you could make a self propelled car all you need is cardboard, wheels, and a balloons or rubber bands

  

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Why do electrical devices have resistance​
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As electrons move through the conductor, some collide with atoms, other electrons, or impurities in the metal.
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3 years ago
A car speeds over a hill past point A, as shown in the figure. What is the maximum speed the car can have at point A such that i
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Answer:

11.8 m/s

Explanation:

At the top of the hill, there are two forces on the car: weight force pulling down (towards the center of the circle), and normal force pushing up (away from the center of the circle).

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mg = m v²/r

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3 years ago
As an intern with an engineering firm, you are asked to measure the moment of inertia of a large wheel, for rotation about an ax
AysviL [449]

Answer:

I=2.766\ kg.m^2

Explanation:

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weight of the wheel, w_w=280\ N

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speed of the hanging mass after the descend, v_o=4\ m.s^{-1}

height of descend, h=2.5\ m

(a)

moment of inertia of wheel about its central axis:

I=\frac{1}{2} m.r^2

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3 0
3 years ago
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Answer:

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