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Yuliya22 [10]
3 years ago
6

When we jump on a concrete surface , the feet gets injured,why?​

Physics
2 answers:
erastovalidia [21]3 years ago
8 0

Because the gravity pulls use towards the ground and our bones can’t take the amount of weight hitting the surface

wariber [46]3 years ago
5 0

What part of your body hits the ground first?

Your legs, knees and torso can flex and accommodate some deceleration, but when you go airborne, even briefly, you accelerate downward, and that in effect increases the “weight” your body must suddenly bear in impact.

Try this at home. Get something heavy, like a box full of paperback books. Now, take go up two steps, turn around, and carefully step over the first step directly onto the ground.

Your feet really notice it don’t they. Maybe even sting a bit.

Now imagine you missed that first step accidentally, and your foot slammed down an additional 8...(more)

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The speed of light is greater in a vacuum than in air or water.<br><br> True or false
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What are the components of the "Earth Radiation Budget?"
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Explanation:

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A beam of protons is directed in a straight line along the +z direction through a region of space in which there are crossed ele
IceJOKER [234]

Answer:

B = 7.6 T   direction of + x

Explanation:

For the proton beam to continue in the same direction the electric and magnetic forces must be equal

              F_{m} - F_{e} = 0

              F_{m} = F_{e}

              Fm = q E

             

The electric force is in the direction of the electric field because it is the charge of the positive proton, the electric force goes in the direction of –y, therefore, the magnetic force cancels this force must go in the direction of + y

 The magnetic force is

             F_{m} = q v x B = q v B sin θ

             θ = 90

             B = q E / q v

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             B = 800/105

             B = 7.6 T

To find the direction of the magnetic field we use the right hand rule, the thumb goes in the direction of the proton velocity, the fingers extended in the direction of the magnetic field and the palm is the direction of force, for a positive charge.

Thumb goes in the direction of the + z axis

Palm in the direction of +y

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7 0
2 years ago
Free runners jump long distances and land on the ground or a wall. How do they apply Newton’s second law to lessen the force of
Veseljchak [2.6K]

As we know that as per Newton's II law we have

F = \frac{dP}{dt}

here we will have

dP = change in momentum

dt = time interval in which momentum is changed

now in order to have least injury during jumping we need to have least force on the jumper

so in order to have least force we can say that the momentum must have to change in maximum time so that amount of force must be least

So we need to increase the time in which momentum of the system is changed

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Monitoring cash flow and keeping track of the bottom line of a business are responsibilities for whom?
lina2011 [118]
Answer:
A financial manager.

Explanation:
This is because a financial manager oversees the financial operations of a company. Generally, a financial manager assumes accounting responsibilities for the company. A financial manager is responsible for planning and managing the company's financial resources.


Side note:
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