Answer:
I font now but I think its 2.0 + 78 w -60
Answer:
Explanation:
The tip of the second hand moves on a circular path having radius equal to .22 m . Redial acceleration is given by the expression
ω²R where ω is angular velocity and R is radius of the circular path .
angular velocity of second hand = 2π / T where T is time period of circular motion . For second hand it is 60 s.
ω = 2π / T
= 2π / 60
= .1047
angular acceleration = .1047² x .22
= 2.41 x 10⁻³ rad / s² .
Answer:
b. Static > sliding > rolling friction.
Explanation:
Static friction is greater than sliding friction. It takes more force to get an object to start sliding than to keep it sliding.
Sliding friction is greater than rolling friction. There are fewer points of contact for a round surface compared to a flat one.
<span>Through which medium would sound travel fastest water a steel bar or nitrogen? ... The speed of sound in air, of which 78% is nitrogen ~ 340 m/s ... Which medium does sound travel the fastest through air water or steel? .... in steel sound travel faster than water because liquids are more denser than gases but less denser ...</span>
January 1st 2000
Hope this helps:):):):):)
