Answer:
Velocity
Explanation:
Speed does not have a direction, Acceleration means that it is speeding up and not at a constant 15m/h, so the answer is B.
Because the Earth<span> is a sphere, the surface gets much more intense </span>sunlight<span>, hence heat, at </span>the equator<span>than at the poles.</span>
In transistor,
Emitter current is equal to the sum of base current and collector current.
Thanks!
Answer:
![\theta=34 \textdegree](https://tex.z-dn.net/?f=%5Ctheta%3D34%20%5Ctextdegree)
Explanation:
From the question we are told that:
Mass ![m=55kg](https://tex.z-dn.net/?f=m%3D55kg)
Angle ![\theta =28.0](https://tex.z-dn.net/?f=%5Ctheta%20%3D28.0)
Coefficient of static friction
Generally, the equation for Newtons second Law is mathematically given by
For
![\sum_y=0](https://tex.z-dn.net/?f=%5Csum_y%3D0)
![N=mgcos \theta](https://tex.z-dn.net/?f=N%3Dmgcos%20%5Ctheta)
for
![\sum_x=0](https://tex.z-dn.net/?f=%5Csum_x%3D0)
![F_{s}=mgsin\theta](https://tex.z-dn.net/?f=F_%7Bs%7D%3Dmgsin%5Ctheta)
Where
![F_{s}=\alpha*N\\\\F_{s}=\alpha*m*gcos \theta](https://tex.z-dn.net/?f=F_%7Bs%7D%3D%5Calpha%2AN%5C%5C%5C%5CF_%7Bs%7D%3D%5Calpha%2Am%2Agcos%20%5Ctheta)
![F_{s}=0.68*55*9.8*cos 28](https://tex.z-dn.net/?f=F_%7Bs%7D%3D0.68%2A55%2A9.8%2Acos%2028)
![F_{s}=323.62N](https://tex.z-dn.net/?f=F_%7Bs%7D%3D323.62N)
Therefore
![\alpha mgcos \theta=mg sin \theta](https://tex.z-dn.net/?f=%5Calpha%20mgcos%20%5Ctheta%3Dmg%20sin%20%5Ctheta)
![\theta=tan^{-1}(0.68)](https://tex.z-dn.net/?f=%5Ctheta%3Dtan%5E%7B-1%7D%280.68%29)
![\theta=34 \textdegree](https://tex.z-dn.net/?f=%5Ctheta%3D34%20%5Ctextdegree)