Answer: B) He has too many independent variables.
Explanation: Nothing in the experiment is a constant or being measured.
Answer:
19.74 N
Explanation:
mass of ball (m) = 0.25 kg
radius (r) = 0.5 m
time (t) = 2 revolutions per seconds = 1/2 = 0.5 second per revolution
find the tension in the string
tension (T) = 
- where velocity (v) =
tension now becomes (T) = 
tension (T) = 
- now substituting the values of mass (m), time (t) and radius (r) into the equation above we have
tension (T) = 
tension (T) = 
= 
= 19.74 N
When you are sitting in a chair your body exerts a FORCE, the chair exerts the SAME force back.
We are given with the data that the angle of velocity is above the negative axis. hence, the angle lies in the second quadrant with negative x axis and positive y axis. In this case, the x component is -12 cos 60 equal to -6 m/s while the y-component is 12 sin 60 equal to 6 sqrt of 3 m/s.
Convection because I’m in seventh grade
