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Bond [772]
3 years ago
5

Suggest a reason why the earth can be compared to a bar magnet​

Physics
1 answer:
Vadim26 [7]3 years ago
6 0
Because it’s a man fetus
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How much work, in N*m, is done when a 10.0 N force moves an object 2.5 m?
Alik [6]
W = F * d
W = 10N * 2.5 m
W = 25 N m
So the answer you want is the third one down.
8 0
3 years ago
A 75-g projectile traveling at 600 m /s strikes and becomes embedded in the 40-kg block, which is ini-tially stationary. Compute
levacccp [35]

Explanation:

The given data is as follows.

          Mass, m = 75 g

         Velocity, v = 600 m/s

As no external force is acting on the system in the horizontal line of motion. So, the equation will be as follows.

          m_{1}v_{1_{i}} = (m_{1} + m_{2})vi

where,  m_{1} = mass of the projectile

            m_{2} = mass of block

              v = velocity after the impact

Now, putting the given values into the above formula as follows.

              m_{1}v_{1_{i}} = (m_{1} + m_{2})vi

         75(10^{-3}) \times 600 = [(75 \times 10^{-3}) + 50] \times v

                                  = \frac{45}{50.075}

                              v = 0.898 m/s

Now, equation for energy is as follows.

               E = \frac{1}{2}mv^{2}

                  = \frac{1}{2} \times (75 \times 10^{-3} + 50) \times (600)^{2}

                  = 13500 J

Now, energy after the impact will be as follows.

             E' = \frac{1}{2}[75 \times 10^{-3} + 50](0.9)^{2}

                 = 20.19 J

Therefore, energy lost will be calculated as follows.

           \Delta E = E  E'

                       = (13500 - 20) J

                       = 13480 J

And,   n = \frac{\Delta E}{E}

             = \frac{13480}{13500} \times 100

             = 99.85

             = 99.9%

Thus, we can conclude that percentage n of the original system energy E is 99.9%.

7 0
3 years ago
Read 2 more answers
What is sex And new born baby why connected to women's veins?
san4es73 [151]

Sex is when a male and a female have intercourse, The reason new born babys are connected to a women's vein is because the baby is connected too the mother and as it grows the vein kinda like ''gets smaller''

3 0
3 years ago
An example of potential energy is a ball sitting _____ of the stairs.
expeople1 [14]

Answer:

at the top

Explanation:

Potential energy is the stored energy, mechanical energy,

or energy possessed by by virtue of the position of an object.an example of potential energy is the energy that a ball possesses by virtue of its sitting at the top of the stairs it being about to roll down the stairs.

3 0
3 years ago
Which two statements are true about a system?
shusha [124]
A and c

Because it defines the boundaries of the system
4 0
3 years ago
Read 2 more answers
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