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Darya [45]
3 years ago
14

Joel uses a crew hammer to remove a nail from a wall . He applied a force 40 newtons on the hammer. The hammer applied a force o

f 160 newtons on the nail . The mechanical advantage of the hammer is ____.
Physics
1 answer:
zaharov [31]3 years ago
3 0
By mechanical advantage 160/40=4
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a 1.2x10^3 kilogram car is accelerated uniformly from 10. meters per second to 20 meters per second in 5.0 seconds. what is the
irinina [24]
Force , F = ma

F =  m(v - u)/t               

Where m = mass in kg, v= final velocity in m/s, u = initial velocity in m/s
t = time, Force is in Newton.

m= 1.2*10³ kg,  u = 10 m/s,  v = 20 m/s, t = 5s

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2 years ago
How many valence electrons are in an atom of fluorine
Korolek [52]

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3 years ago
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2 years ago
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Lady bird [3.3K]
I have all the answers here so take this

8 0
1 year ago
Two large non-conducting plates of surface area A = 0.25 m 2 carry equal but opposite charges What is the energy density of the
Stells [14]

Answer:

5.1*10^3 J/m^3

Explanation:

Using E = q/A*eo

And

q =75*10^-6 C

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eo = 8.85*10^-12

Energy density = 1/2*eo*(E^2) = 1/2*eo*(q/A*eo)^2 = [q^2] / [2*(A^2)*eo]

= [(75*10^-6)^2] / [2*(0.25)^2*8.85*10^-12]

= 5.1*10^3 J/m^3

8 0
3 years ago
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