Given:
speed of 0.40meters/seconds
1,800 Newton's horizontal force
Required:
Power of the horse
Solution:
P = F(D/T) where P is power in
watts, F is the force, D is the distance and T is time
P = (1,800N) (0.40 meters/seconds)
P = 720 Watts
Answer:
The point will travel a distance of 15708 centimeters in 30 seconds of rotation.
Explanation:
In this case, we see a disk rotating at constant rate, the travelled distance of a point on the outside rim (
), in centimeters, is determined by using this expression:
(1)
Where:
- Angular speed, in radians per second.
- Radius of the disk, in centimeters.
- Time, in seconds.
If we know that 
, 
and 
, then the travelled distance of the point is:
The point will travel a distance of 15708 centimeters in 30 seconds of rotation.
Well mass=density times volume so .0065x260= 1.69
So your answer is 1.69 :)
the answer is the Ultraviolet radiation
PROOF : as said that the ozone layer protects us from very harmful ultraviolet radiation THAT CAN DESTROY LIfe on earth :D
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