Answer:
positive
Step-by-step explanation:
two negatives make a positive
The new Kinetic energy is 8000 J
Step-by-step explanation:
Step 1 :
Given,
The Kinetic energy of the fan = 2000J
We need to find new kinetic energy when the angular velocity is doubled.
Step 2 :
We have
KE =
× m × v² = 2000
where m represents the mass and v represents the singular velocity
v = r ω where
r is radius of fan and ω is the angular velocity.
Given that the angular velocity is doubled singular velocity is also doubled. since the radius of the fan is the same in both cases we have
the new velocity = 2rω = 2v
So the KE =
m(new velocity)² =
m(2v)² = 4 (
mv²) = 4 (2000) = 8000 J
Step 3 :
Answer :
The new Kinetic energy is 8000 J
Since 12 isn't over 50, you would round to the lower hundred. The answer is 13,900.
Answer:
part/whole
Step-by-step explanation:
jazz is only a part of music, music is the whole thing and also lave tube would be a part of a bigger thing which is the cave
Answer:
There are 35 adult dogs and 20 puppies
<em></em>
Step-by-step explanation:
<em>Represent the puppies with P and the Adult dogs with A</em>
Given

Dogs = 55
Required
Determine A and P
First, we need to sum the ratios;



Adult Dogs is then calculated as follows;




Puppies is calculated by subtracting the number of adult dogs from the total



<em>Hence;</em>
<em>There are 35 adult dogs and 20 puppies</em>