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djyliett [7]
2 years ago
9

Differences between work against friction and work against gravity.

Physics
2 answers:
Goshia [24]2 years ago
4 0

Friction is the force that is resisting the motion of an object so it will always point in the opposite direction of that of movement. ... The force of gravity points downwards . So when you do work against gravity it means that the force acting on that object points in the upward direction .

oksian1 [2.3K]2 years ago
4 0

Explanation:

<h2><em>hop</em><em>e</em><em> </em><em>this</em><em> would</em><em> be</em><em> the</em><em> right</em><em> answer</em><em> </em></h2>

<h2><em>HOP</em><em>E</em><em> THIS</em><em> HELPS</em><em> YOU</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em></h2>

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The nuclei of large atoms, such as uranium, with 9292 protons, can be modeled as spherically symmetric spheres of charge. The ra
Scrat [10]

Answer:

Part 1 E = 2.42 * 10^{21}  N/C

Part 2 E = 1.3 * 10^{13}  N/C

Part 3 E = 0

Explanation:

Given

Number of protons = 92

Radius of nucleus r_n = 7.4 * 10^{-15} m

Distance of the electrons r_1 = 1.0 * 10^ {-10} m

Part 1

Electric field produced by  just outside its surface

E  = \frac{q}{4\pi*E_0* r_n^2 } \\E  = \frac{9 * 10^ 9 * 92 * 1.6 * 10^{-19}}{(7.4* 10^{-15})^2} \\E = 2.42 * 10^{21}  N/C

Part 2

Electric field produced by  just outside its surface

E  = \frac{q}{4\pi*E_0* r_n^2 } \\E  = \frac{9 * 10^ 9 * 92 * 1.6 * 10^{-19}}{(1* 10^{-15})^2} \\E = 1.3 * 10^{13}  N/C

Part 3

The net electric field inside a uniform shell of negative charge is zero because the electric flux lines cancel out each other

hence, the solution is

Part 1 E = 2.42 * 10^{21}  N/C

Part 2 E = 1.3 * 10^{13}  N/C

Part 3 E = 0

7 0
3 years ago
Describe in detail how you might experimentally determine the density of a cylindrical shaped object. Explain all steps clearly
pashok25 [27]
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4 0
3 years ago
Which of the following would accurately label the X axis?
kogti [31]

Answer: Distance

I’m not sure if it is correct, but I am pretty sure it is......

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6 0
3 years ago
A scientist is testing the seismometer in his lab and has created an apparatus that mimics the motion of the earthquake felt in
otez555 [7]

Complete Question

The complete question is shown on the first uploaded image  

Answer:

a

 a_{max} = 0.00246 \  m/s^2

b

   k  =722.2 \ N/m

Explanation:

From the question we are told that

     The  amplitude is A  = 1.8 \ cm  =  0.018 \ m

     The period is T  = 17 \ s

    The test weight is  W =  13 \ N

Generally the radial acceleration is mathematically represented as

        a =  w^2 r

at maximum angular acceleration

       r =  A

So  

       a_{max} =  w^2 A

Now w is the angular velocity which is mathematically represented as

      w =  \frac{2 * \pi }{T}

Therefore

       a_{max} =  [\frac{2 *  \pi}{T} ]^2 * A

substituting values

       a_{max} =  [\frac{2 *  3.142}{17} ]^2 * 0.018

       a_{max} = 0.00246 \  m/s^2

Generally this test weight is mathematically represented as

     W =  k *  A

Where k is the spring constant

Therefore

        k  = \frac{W}{A}

substituting values        

      k  = \frac{13}{0.018}

     k  =722.2 \ N/m

7 0
3 years ago
Uranium-235 undergoes fission, forming krypton-92, barium-141, and 3
Ahat [919]

Answer:

C

Explanation:

Some of the mass

8 0
2 years ago
Read 2 more answers
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