<h2>
Answer: Toward the center of the circle.</h2>
This situation is characteristic of the uniform circular motion , in which the movement of a body describes a circumference of a given radius with constant speed.  
However, in this movement the velocity has a constant magnitude, but its direction varies continuously.
Let's say  is the velocity vector, whose direction is perpendicular to the radius
 is the velocity vector, whose direction is perpendicular to the radius  of the trajectory, therefore  
the acceleration
 of the trajectory, therefore  
the acceleration  is directed toward the center of the circumference.
 is directed toward the center of the circumference.
  
 
        
        
        
Answer:
0.000625 V 
Explanation:
The formula linking current , resistance and voltage is : 
V = I/R 
Voltage = Current / Resistance 
Now we substitute values given in question : 
Voltage = 0.250 / 400 
Voltage (V) = 0.000625 
Our final answer is 0.000625 V 
Hope this helped and have a good day 
 
        
             
        
        
        
-- The lenses of eyeglasses work because of refraction. 
-- A pencil standing in a half-glass of water looks broken because of refraction.
-- The lenses and mirrors in telescopes and microscopes work because of refraction.
-- When the sun is setting and it looks squashed ... shorter and wider than a true circle ... that's caused by refraction of the sunlight through Earth's atmosphere.
 
        
             
        
        
        
Answer:
(A) 2.4 N-m
(B) 
(C) 315.426 rad/sec
(D) 1741.13 J
(E) 725.481 rad
Explanation:
We have given mass of the disk m = 4.9 kg 
Radius r = 0.12 m, that is distance = 0.12 m 
Force F = 20 N
(a) Torque is equal to product of force and distance 
So torque  , here F is force and r is distance
, here F is force and r is distance
So 
(B) Moment of inertia is equal to 
So 
Torque is equal to 
So angular acceleration 
(C) As the disk starts from rest 
So initial angular speed 
Time t = 4.6 sec
From first equation of motion we know that 
So 
(D) Kinetic energy is equal to 
(E) From second equation of motion 

 
        
             
        
        
        
The average kinetic energy of the molecules of the coffee will decrease and the speed of the individual molecules will also reduce.
<h3>
Temperature of resultant mixture</h3>
The temperature of the resultant mixture will be higher than the cold water temperature and lower than the hot coffee temperature.
Based on the decrease of the resulting temperature (equilibrium temperature) of the mixture, the average kinetic energy of the molecules of the coffee will decrease and the speed of the individual molecules of the hot coffee mixture will reduce, leading to a resultant cold mixture of coffee.
Learn more about kinetic molecular model here: brainly.com/question/2901837