Answer: 7750 J
Explanation:
Mechanical energy is potential energy added to kinetic energy.
5000 + 2750 J = 7750 J
Answer:
I would have to go with A, or maybe....yea A
Answer:
Torque Of a Force: If The Force has tendency or Bends The Body about Longitudinal axis of the Body it is Torque. Moment Of a Force :If Force has Tendency to or Rotates the Body about Transverse asis the Body It is Moment .
Explanation:
Answer:
Force, ![F=2.27\times 10^4\ N](https://tex.z-dn.net/?f=F%3D2.27%5Ctimes%2010%5E4%5C%20N)
Explanation:
Given that,
Mass of the bullet, m = 4.79 g = 0.00479 kg
Initial speed of the bullet, u = 642.3 m/s
Distance, d = 4.35 cm = 0.0435 m
To find,
The magnitude of force required to stop the bullet.
Solution,
The work energy theorem states that the work done is equal to the change in its kinetic energy. Its expression is given by :
![F.d=\dfrac{1}{2}m(v^2-u^2)](https://tex.z-dn.net/?f=F.d%3D%5Cdfrac%7B1%7D%7B2%7Dm%28v%5E2-u%5E2%29)
Finally, it stops, v = 0
![F.d=-\dfrac{1}{2}m(u^2)](https://tex.z-dn.net/?f=F.d%3D-%5Cdfrac%7B1%7D%7B2%7Dm%28u%5E2%29)
![F=\dfrac{-mu^2}{2d}](https://tex.z-dn.net/?f=F%3D%5Cdfrac%7B-mu%5E2%7D%7B2d%7D)
![F=\dfrac{-0.00479\times (642.3)^2}{2\times 0.0435}](https://tex.z-dn.net/?f=F%3D%5Cdfrac%7B-0.00479%5Ctimes%20%28642.3%29%5E2%7D%7B2%5Ctimes%200.0435%7D)
F = -22713.92 N
![F=2.27\times 10^4\ N](https://tex.z-dn.net/?f=F%3D2.27%5Ctimes%2010%5E4%5C%20N)
So, the magnitude of the force that stops the bullet is ![2.27\times 10^4\ N](https://tex.z-dn.net/?f=2.27%5Ctimes%2010%5E4%5C%20N)
Answer:
HOPE IT HELPS.....
Explanation:
The legal standard for drunkenness across the United States ranges from 0.10 to 0.08. If a person's BAC measures 0.08, it means that there are 0.08 grams (i.e., 80 mg) of alcohol per 100 ml of blood. The American Medical Association says that a person can become impaired when the blood alcohol level hits 0.05.