Answer:
A velocity of ![20 \: km/h](https://tex.z-dn.net/?f=%2020%20%5C%3A%20km%2Fh)
Explanation:
Since the magnitude of the vector is equal to the magnitude of velocity, velocity of the 2 cm vector represents a velocity of $10\times 2= 20 \: km/h$.
<span>The middle life crisis occurs for men at age of 39 and for women at age of 44. At this age, people start realizing that they are getting older and experience some physical changes which seem distressful for them.</span>
<span> It affects the sense of accomplishment and progress in career. Due to a midlife crisis, people start engaging in activities to cope with the reality such as wearing clothes that are fashionable, dating someone etc. Yes, I think I will also go through one because it happens with everyone in this age. It can be avoided by accepting the fact that these changes are reality and everyone have to face it one day.</span>
Answer:
The hiker followed a road heading north for 2 miles in 30 minutes.
Explanation:
In order to describe the motion of an object, distance covered and time taken must be required. The total path covered by an object is called the distance travelled.
The hiker followed a road heading north for 2 miles in 30 minutes. This describes the motion of hiker. The motion shows how fast the hiker is moving.
Distance, d = 2 miles = 3218.6 m
times, t = 30 minutes = 1800 seconds
So, we can say that the hiker is moving with a speed of 1.78 m/s in north direction.
Hence, this is the required solution.
Answer:
Image distance of apple=-6.7 cm
Magnification of apple=0.33
Explanation:
We are given that an apple is placed 20.cm in front of a diverging lens.
Object distance=u=-20 cm
Focal length=f=-10 cm
Because focal length of diverging lens is negative.
We have to find the image distance and magnification of the apple.
Lens formula
![\frac{1}{f}=\frac{1}{v}-\frac{1}{u}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7Bf%7D%3D%5Cfrac%7B1%7D%7Bv%7D-%5Cfrac%7B1%7D%7Bu%7D)
Substitute the values then we get
![-\frac{1}{10}=\frac{1}{v}+\frac{1}{20}](https://tex.z-dn.net/?f=-%5Cfrac%7B1%7D%7B10%7D%3D%5Cfrac%7B1%7D%7Bv%7D%2B%5Cfrac%7B1%7D%7B20%7D)
![\frac{1}{v}=-\frac{1}{10}-\frac{1}{20}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7Bv%7D%3D-%5Cfrac%7B1%7D%7B10%7D-%5Cfrac%7B1%7D%7B20%7D)
![\frac{1}{v}=\frac{-2-1}{20}=-\frac{3}{20}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7Bv%7D%3D%5Cfrac%7B-2-1%7D%7B20%7D%3D-%5Cfrac%7B3%7D%7B20%7D)
![v=-\frac{20}{3}=-6.7 cm](https://tex.z-dn.net/?f=v%3D-%5Cfrac%7B20%7D%7B3%7D%3D-6.7%20cm)
Image distance of apple=-6.7 cm
Magnification=m=![\frac{v}{u}=\frac{-\frac{20}{3}}{-20}](https://tex.z-dn.net/?f=%5Cfrac%7Bv%7D%7Bu%7D%3D%5Cfrac%7B-%5Cfrac%7B20%7D%7B3%7D%7D%7B-20%7D)
Magnification of apple=![\frac{1}{3}=0.33](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7D%3D0.33)
Hence, the magnification of apple=0.33
Answer:
My scenario would be A Car vs. a guard rail on a road. You have a car that is coming down a Highway at a speed of 43 Mph Miles per hour (69.2018 Kmh)
And it hits a steel guardrail and the car smashes in at the front and the guardrail is only bent while the car has the bumper and the hood along with the headlights and windshield along with the passenger side window break.
Explanation:
This is caused by so much force reacting from one object to another but also depends on molecular density.