Angular acceleration = (change in angular speed) / (time for the change)
Change in angular speed = (speed at the end) - (speed at the beginning)
For this fan, speed at the end = 7700 rpm, speed at the end = 0 .
Change in angular speed = -7700 rpm
Angular acceleration = (-7700 rpm) / (2.5 sec)
<em>Angular acceleration = -3,080 rev per minute / sec</em>
That's a perfectly good and true answer to the question, but the units are ugly. We really need to fix the units, and convert them into something prettier before we hand in this assignment.
1 rev = 2π radians, and
1 minute = 60 seconds .
So
Angular acceleration =
(-3,080 rev/min-sec) · (2π rad/rev) · (1 min/60 sec)
AngAccel = (-3,080 · 2π · 1 / 60) · (rev·rad·min / min·sec·rev·sec)
AngAccel = ( -102 and 2/3 · π) · (rad/s²)
<em>AngAccel = -322.5 radian/s²</em>
Answer:
B :)
Explanation:
:) JUST TRUST ME I GOT IT CORRECT
Answer:
Explanation:
The strengthcompassion field is proportional to the closeness of the field lines—more precisely, it is proportional to the number of lines per unit area perpendicular to the lines. The direction of the electric field is tangent to the field line at any point in space. Field lines can never cross. These pattern of lines, sometimes referred to as electric field lines, point in the direction that a positive test charge would accelerate if placed upon the line. As such, the lines are directed away from positively charged source charges and toward negatively charged source charges.
Rules for drawing electric field lines
1. Electric field lines are always drawn from High potential to
low potential.
2. Two electric field lines can never intersect each other.
3. The net electric field inside a Conductor is Zero.
4. Electric field line from a positive charge is drawn radially outwards and from a negative charge radially inwards.
5. The density of electric field lines tells the strength of the electric field at that region.
6. Electric field lines terminate Perpendicularly to the surface of a conductor.
A vector quantity has a direction and a magnitude, while a scalar has only a magnitude. You can tell if a quantity is a vector by whether or not it has a direction associated with it.
So, electric fields are vector quantity due to the fact any student can tell you that a compass is used to determine which direction is north.
Since the compass always point northward, then it has a direction and magnitude and so it is a vector quantity
It’s FF= μ•Fn
Ff stands for friction force
The weird symbol is your coefficient of friction which has no units
Fn stands for normal force
For the scale od the paraboliczne curviczne Ur
