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solmaris [256]
3 years ago
12

Give an example of a collision in real life. Use the law of conservation of energy to describe the transfer of momentum. Be sure

and discuss the momentum before and after the collision occurs. You will need at least 3 sentences to thoroughly answer this question.
Physics
1 answer:
ozzi3 years ago
7 0

Explanation :

Using the law of conservation of energy  

When two cars collide with each other then the momentum is same before collision and after collision but energy is changed after collision in form of heat and sound.

We know this collision is inelastic collision.

In Inelastic collision, when two objects collide with each other then the momentum is conserved but kinetic energy is not conserved.  

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What's the concept of mass ?
Marat540 [252]
Masa is a concept that identifies that magnitude of a physical nature that allows indicating the amount of matter in a body. Within the International System , its unit is the kilogram ( kg . ) 
6 0
3 years ago
One hundred turns of (insulated) copper wire are wrapped around a wooden cylindrical core of cross-sectional area 5.87 × 10-3 m2
Grace [21]

Answer:

The amount of charge that flow through a point is \Delta q  =  0.126 \ C

Explanation:

From the question we are told that

    The number of turns is  N  =  100

    The area is  A = 5.87 *10^{-3} m^2

       The total resistance is R = 14.9 \ \Omega

       The magnetic field in first direction  is  B_1 =  1.93 \ T

        The magnetic field in second   direction  is B_2 = -1.93 \ T

The change in magnetic field is evaluated as

     \Delta B  =  B_1 - B_2

substituting values

      \Delta B  =  1.93 - [- 1.93]

       \Delta B  =3.2 \ T

The induced emf due to the change is mathematically evaluated as

        e = NA \frac{\Delta B }{\Delta t }

This can also be mathematically represented as

     e = IR

     Where I can be mathematically represented as

     I =  \frac{\Delta q }{\Delta t}

So  

     e = \frac{\Delta q}{\Delta t } R

Now  

      \frac{\Delta q}{\Delta t } R    = NA \frac{\Delta B }{\Delta t }

=>   \Delta q  =  \frac{N A (\Delta B)}{R}

substituting values

     \Delta q  =  \frac{100 *  5.87 *10^{-3} (3.2}{14.9}

     \Delta q  =  0.126 \ C

     

   

     

7 0
3 years ago
HELP PLEASEEE
dedylja [7]
The temperature will (A) Decrease.
3 0
3 years ago
A hydrogen atom that has an electron in the n = 2 state absorbs a photon. What wavelength must the photon possess to send the el
Deffense [45]

Answer:

486nm

Explanation:

in order for an electron to transit from one level to another, the wavelength emitted is given by Rydberg Equation which states that

\frac{1}{wavelength}=R.[\frac{1}{n_{f}^{2} } -\frac{1}{n_{i}^{2} }] \\n_{f}=2\\n_{i}=4\\R=Rydberg constant =1.097*10^{7}m^{-1}\\subtitiute \\\frac{1}{wavelength}=1.097*10^{7}[\frac{1}{2^{2} } -\frac{1}{4^{2}}]\\\frac{1}{wavelength}= 1.097*10^{7}*0.1875\\\frac{1}{wavelength}= 2.06*10^{6}\\wavelength=4.86*10{-7}m\\wavelength= 486nm\\

Hence the photon must possess a wavelength of 486nm in order to send the electron to the n=4 state

4 0
3 years ago
You are riding in an elevator that is accelerating upward. Suppose you stand on a scale. The reading on the scale is __________.
tatyana61 [14]

Given the following choices;

A) less than your true weight, mg.

B) equal to your true weight, mg.

C) more than your true weight, mg.

D) could be more or less than your true weight, mg, depending on the value of the speed.

The answer is; C

This is due to G-force. These are the perception of the weight of an object that is accelerating against gravity. We experience 1 g force on the surface of the earth because the ground exerts an upward exertion against gravity preventing as from falling to the center of the earth.  

8 0
2 years ago
Read 2 more answers
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