Answer:
4750000 J
Explanation:
Kinetic Energy= 1/2* mass* velocity²
1/2*950*100²=4750000
Answer:
σ =4.180×10^{-9} C/m^2
Explanation:
electric field due to non conducting sheet is
![E=\frac{\sigma}{2\epsilon_0}](https://tex.z-dn.net/?f=E%3D%5Cfrac%7B%5Csigma%7D%7B2%5Cepsilon_0%7D)
the force acting on the piece of Styrofoam
Eq= mg
⇒E= mg/q
now,
![\frac{mg}{q} = \frac{\sigma}{2\epsilon_0}](https://tex.z-dn.net/?f=%5Cfrac%7Bmg%7D%7Bq%7D%20%3D%20%5Cfrac%7B%5Csigma%7D%7B2%5Cepsilon_0%7D)
⇒![\sigma= \frac{2mg\epsilon_0}{q}](https://tex.z-dn.net/?f=%5Csigma%3D%20%5Cfrac%7B2mg%5Cepsilon_0%7D%7Bq%7D)
![\sigma= \frac{2\times0.013\times9.81\times8.85\times10^{-12}}{5.40\times10^{-4}}](https://tex.z-dn.net/?f=%5Csigma%3D%20%5Cfrac%7B2%5Ctimes0.013%5Ctimes9.81%5Ctimes8.85%5Ctimes10%5E%7B-12%7D%7D%7B5.40%5Ctimes10%5E%7B-4%7D%7D)
charge per unit area (in C/m2) on the plastic sheet σ =4.180×10^{-9} C/m^2
The force applied is 10.68 N
Explanation:
The work done by a force on an object is given by:
![W=Fd cos \theta](https://tex.z-dn.net/?f=W%3DFd%20cos%20%5Ctheta)
where
F is the magnitude of the force
d is the displacement
is the angle between the direction of the force and of the displacement
In this problem we know:
W = 142 J
d = 13.3 m
since the force is applied horizontally, in the direction of motion of the box
So, solving for F, we find the magnitude of the force:
![F=\frac{W}{d cos \theta}=\frac{142}{(13.3)(cos 0)}=10.68 N](https://tex.z-dn.net/?f=F%3D%5Cfrac%7BW%7D%7Bd%20cos%20%5Ctheta%7D%3D%5Cfrac%7B142%7D%7B%2813.3%29%28cos%200%29%7D%3D10.68%20N)
Learn more about work:
brainly.com/question/6763771
brainly.com/question/6443626
#LearnwithBrainly
Answer:
Part A: The car shoots out of the milk carton at a fast speed.
Part B: Potential Energy
Part C:
1. Gravitational Potential Energy
2. Motion Energy
3. It goes from Motion Energy/Kinetic Energy to Gravitational Potential Energy.
4. Motion Energy
Part D: It is a transfer of energy from the rubber band to the car.
Part E: The car stopped because of gravitation pull that is slowly making the car slow down and eventually stop. The energy is then converted to kinetic energy and heat energy.
Part F: I would think adding force would make the car move again. The type of energy it would have while moving would be: Motion Energy.
Have a great day! :D
B, It binds protons and neutrons