C. The force is a constant change, because her position on the Ferris wheel will constantly change. I believe this is the answer, but use sources to double check. I might use different vocab. then your teachers.
Answer:
A
Explanation:
Kinetic energy is the energy of motion
KE=.5mv^2
>m= mass
>v= velocity (m/s)
PE=mgh
>m= mass
>g= acceleration due to graviry
>h= height
Power output = V*I=11000*750=8250 kVA= 8250 kW
Answer:
a) The perimeter of the rectangle is 29.4 centimeters.
b) The uncertainty in its perimeter is 0.8 centimeters.
Explanation:
a) From Geometry we remember that the perimeter of the rectangle (
), measured in centimeters, is represented by the following formula:
(1)
Where:
- Width, measured in centimeters.
- Length, measured in centimeters.
If we know that 
and 
, then the perimeter of the rectangle is:
The perimeter of the rectangle is 29.4 centimeters.
b) The uncertainty of the perimeter (
), measured in centimeters, is estimated by differences. That is:
(2)
Where:
- Uncertainty in width, measured in centimeters.
- Uncertainty in length, measured in centimeters.
If we know that 
and 
, then the uncertainty in perimeter is:
The uncertainty in its perimeter is 0.8 centimeters.
Answer:
The correct option is D
Explanation:
In the course of the experiment, two key phrases/variables defined the experiment done,
i) the release height of the steel ball (independent variable)
ii) the distance the ball travels from the ramp before falling to the ground (dependent variable)
The only option that contains and relates this two variables as carried out during the course of the experiment is option D.
