Answer:
The object keeps moving at the same speed and direction.
Explanation:
This is because the balanced forces acting on the object cancel out each other since the are in opposite directions, leaving only the original force acting on the object which is causing its motion.To illustrate, let F₁ be the initial force and F₂ and F₃ be the balanced forces. The net force F = F₁ + F₂ + F₃. Since F₂ and F₃ are balanced, F₂ = -F₃ ⇒ F₂ + F₃ = 0.
So,
F = F₁ + F₂ + F₃
= F₁ + (F₂ + F₃)
= F₁ + 0
= F₁
Which is the original force acting on the object. Thus, the object keeps moving at the same speed and direction
The force of gravity will decrease.
More the distance between the objects, less the force of gravity between them.
They are inversely related.
Hope this help :)
Answer:
The answer is B
Explanation:
The absorption happens when photons from light hit atoms and molecules, and they vibrate because of that specific interaction. Then the heat ejects from the object in the format of thermal energy.
frequency of engine is given here
![initial frequency = 1200 rpm](https://tex.z-dn.net/?f=initial%20frequency%20%3D%201200%20rpm)
![f_i = 1200/60 = 20 Hz](https://tex.z-dn.net/?f=f_i%20%3D%201200%2F60%20%3D%2020%20Hz)
![final frequency = 3000 rpm](https://tex.z-dn.net/?f=final%20frequency%20%3D%203000%20rpm)
![f_f = 3000/60 = 50 Hz](https://tex.z-dn.net/?f=f_f%20%3D%203000%2F60%20%3D%2050%20Hz)
now we have angular speed as
![\omega_i = 2\pi f_i](https://tex.z-dn.net/?f=%5Comega_i%20%3D%202%5Cpi%20f_i%20)
![\omega_i = 2\pi(20) = 40\pi](https://tex.z-dn.net/?f=%5Comega_i%20%3D%202%5Cpi%2820%29%20%3D%2040%5Cpi)
similarly
![\omega_f = 2\pi f_f](https://tex.z-dn.net/?f=%5Comega_f%20%3D%202%5Cpi%20f_f)
![\omega_f = 2\pi(50) = 100 \pi](https://tex.z-dn.net/?f=%5Comega_f%20%3D%202%5Cpi%2850%29%20%3D%20100%20%5Cpi)
now by the formula of angular acceleration we will have
![\alpha = \frac{\omega_f - \omega_i}{\Delta t}](https://tex.z-dn.net/?f=%5Calpha%20%3D%20%5Cfrac%7B%5Comega_f%20-%20%5Comega_i%7D%7B%5CDelta%20t%7D)
![\alpha = \frac{100\pi - 40\pi}{3}](https://tex.z-dn.net/?f=%5Calpha%20%3D%20%5Cfrac%7B100%5Cpi%20-%2040%5Cpi%7D%7B3%7D)
![\alpha = 20\pi rad/s^2](https://tex.z-dn.net/?f=%5Calpha%20%3D%2020%5Cpi%20rad%2Fs%5E2)
![\alpha = 62.8 rad/s^2](https://tex.z-dn.net/?f=%5Calpha%20%3D%2062.8%20rad%2Fs%5E2)