Answer:
a = 50.26 rad/s^2
Explanation:
We know that:
θ =
where θ is the angle, a the angular aceleration and t the time.
First, we need to find how many rad are equivalent to 4 rev, as:
θ = 4 rev * 2π = 25.13 rad
Finally, replacing θ by 25.13 rad and t by 1 second, we get:
25.13 rad =
Solving for a:
a = 50.26 rad/s^2
Answer:75 N
Explanation:
Given
Bob is pushing the box with a force of 75 N with constant speed. Constant speed indicates that net force on the block is zero i.e. friction force is balancing the applied force.
so friction force f=75 N
If Alice is pushing an identical box with constant speed so net force acting on box must be equal to an applied force.
As the friction force is 75 N so Alice must be applying a force of 75 N
Explanation:
The orbital radius of the Earth is
The orbital radius of the Mercury is
The orbital radius of the Pluto is
We need to find the time required for light to travel from the Sun to each of the three planets.
(a) For Sun -Earth,
Kepler's third law :
M is mass of sun,
So,
(b) For Sun -Mercury,
(c) For Sun-Pluto,
<span>impulse =force*time=mass*acceleration*time=mass*... in momentum , I hope this helps you out!! Also have an amazing day and good luck on any further work !!!
#brainlyzkool</span>
Red light would be commonly used due to the longer wavelength