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saw5 [17]
3 years ago
10

A student pulls a lever down 4 m. The lever lifts a box that weighs 20 N up a distance of 2 m. How much work was done on the box

?
Physics
1 answer:
adelina 88 [10]3 years ago
4 0
The answer is 40 J.  <span>A student pulls a lever down 4 m. The lever lifts a box that weighs 20 N up a distance of 2 m. 40 J of work was done on the box.  </span>
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Find the y-component of this
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Answer:

-0.0789 m

Explanation:

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y = 0.250 sin(-18.4) ≈ -0.0789 m

Notice it is negative since it is below the x-axis.

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Mike rides his horse with a constant speed of 20 km/h. How far can he travel in 4 hours?
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Mike can travel 80 Km in 4 hours

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In an experiment in space, one proton is held fixed and another proton is released from rest a distance of 1.00 mm away. part a
mihalych1998 [28]
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8 0
3 years ago
20. Using the picture, how many neutrons does lithium have?
Igoryamba

Answer:

No. of Neutrons = 3

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The atomic number of Lithium is given as 3 in the symbol while the mass number is given as 5.941 which is approximately equal to 6.

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Therefore,

Mass Number - Atomic Number = (No. of Protons + No. of Neutrons) - No. of Protons

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3 years ago
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ziro4ka [17]

Explanation:

Amperage is the unit of electric current. It describes the strength of the electric current in a circuit.

The voltage is the driving force of the current in a circuit

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learn more:

Voltage brainly.com/question/6949231

#learnwithBrainly

 

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