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Setler [38]
3 years ago
9

If it takes 320 N of force to push a box up a ramp, yet it would take 1,600 N of force to lift the box straight up, what is the

mechanical advantage of the ramp? O A. 0.2 O B. 4 O C. 5 O D. 40
Physics
1 answer:
grin007 [14]3 years ago
5 0
MA = Fwithout help/Fwith machine
MA = 1600/320 = 5
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Marta_Voda [28]

Answer:

Acceleration, a=9.91\times 10^{15}\ m/s^2

Explanation:

It is given that,

Separation between the protons, r=3.73\ nm=3.73\times 10^{-9}\ m

Charge on protons, q=1.6\times 10^{-19}\ C

Mass of protons, m=1.67\times 10^{-27}\ kg

We need to find the acceleration of two isolated protons. It can be calculated by equating electric force between protons and force due to motion as :

ma=\dfrac{kq^2}{r^2}

a=\dfrac{kq^2}{mr^2}      

a=\dfrac{9\times 10^9\times (1.6\times 10^{-19})^2}{1.67\times 10^{-27}\times (3.73\times 10^{-9})^2}      

a=9.91\times 10^{15}\ m/s^2

So, the acceleration of two isolated protons is 9.91\times 10^{15}\ m/s^2. Hence, this is the required solution.

3 0
3 years ago
The Doppler effect is a change in the ________________ frequency of sound caused by the motion of either their listener or the s
lyudmila [28]
The answer is
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6 0
3 years ago
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If a mass of 76 kg acts downward 0.38 m from the axis of rotation on one end of a board and another force of 129 N also acts dow
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Answer:

y = 2.196 m

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Now, equating moments for the equilibrium

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Answer:

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