Answer:
Explanation:
There are two hypotheses she could test:
A cat's heart rate changes while it is napping.
A cat's heart rate does not change while it is napping.
Answer:
4.5sec
Explanation:
From the question above, the following are the parameters that are given
u= 30m/s
v= 50m/s
s= 180m
First of all we have to find the acceleration by using the third equation of motion
V^2= U^2 + 2as
50^2= 30^2 + 2(a)(180)
2500= 900 + 360a
Collect the like terms
2500-900= 360a
1600=360a
Divide both sides by the coefficient of a which is 360
1600/360=360a/360
a= 4.44m/s
The next step is to find the time. To do this we will have to use the first equation of motion
v= u + at
50= 30 + 4.44t
Collect the like terms
50-30= 4.44t
20= 4.44t
Divide both sides by the coefficient of t which is 4.44
20/4.44= 4.44t/4.44
t= 4.5sec
Hence 4.5secs elapses while the auto moves at a distance of 180m
The correct answer is <span>outboard. This is the most basic type of engine seen everywhere that is attached to regular boats so that you can move them with an engine instead of by rowing. The engine contains all that it needs in the single box and it just gets attached to the boat.</span>
Answer:
The value is 
Explanation:
From the question we are told that
The mass of the child is 
The angular velocity is 
The distance from the center is 
Generally the centripetal force is mathematically represented as
=> 
=>
Ernest Rutherford was the first scientist to develop the planetary model of the atom.
