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Paraphin [41]
3 years ago
6

Why is the mechanical advantage of a bottle opener always greater than 1?

Physics
1 answer:
Katen [24]3 years ago
6 0
For a lever, the mechanical advantage is the ratio of the lever arms. Since the lever arm of the opener is always greater than that of the output arm, the mechanical advantage is greater than 1.
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Vlad [161]
You need to have the Mass and velocity
5 0
3 years ago
Calculate the current through a 3.0 ω resistor with a voltage of 9.0 v across it.
gulaghasi [49]

Answer: 3 A

Explanation:

According to<u> Ohm's law</u>:  

V=R.I

Where:

V=9 V is the voltage

R=3\Omega is the resistance of the resistor

I is the electric current (the value we want to find)

Isolating I:

I=\frac{V}{R}

I=\frac{9 V}{3\Omega}

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7 0
2 years ago
A parcel of land is in the shape of an isosceles triangle. The base has a length of 425 ft.; the other sides, which are of equal
kogti [31]

Answer:

The answer to your question is 636.6 ft    

Explanation:

Data

base = 425 ft

angle = 39°

See the picture below

1.- Divide the triangle to get two right triangles.

    Now the superior angle will measure 19.5° and the opposite side will measure 212.5 ft

2.- Use the trigonometric function sine to find the hypotenuse

     sin 19.5 = 212.5/hyp

solve for hyp

    hyp = 212.5 / sin 19.5

Result

    hyp = 212.5/ 0.333

    hyp = 636.6 ft    

4 0
2 years ago
A solid non-conducting sphere of radius R carries a charge Q distributed uniformly throughout its volume. At a radius r (r &lt;
Svet_ta [14]

Answer:  

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Explanation:  

E inside = KQr_{1} /R^{3}  

so if r1 will be the same then  

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so if R become 2R  

E becomes 1/8 of the initial electric field.

8 0
2 years ago
Read 2 more answers
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Art [367]
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1.5  t^2  =  15t

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Hope this helps
4 0
3 years ago
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