Answer:
Explanation:
Attach is A and B
c) No, because 2.6 is outside the range of the data values for the explanatory variable.
d) H0: β1 =0 and Ha: β1 > 0
Answer:
Explanation:
initial frequency of revolution is given as
now initial angular speed is
Similarly final angular speed is given as
Now angular acceleration is given as
Answer:
tension in the rope is 22.29 N
angle is 56.06 degree
Explanation:
Given data
mass = 1.27 kg
horizontal force = 18.5 N
acceleration = 9.81 m/s2
to find out
magnitude and the rope angle
solution
we know object is in equilibrium so net force is zero here
so net force at x axis = 0 that mean F - Tsinθ = 0 , F = Tsinθ
and net force at y axis = 0 that is T cosθ - mg = 0 , T cosθ = mg
in equilibrium condition
F / mg = Tsinθ / T cosθ
18.5/ 1.27× 9.81 = sinθ / cosθ
so θ = tan^-1 (1.4859)
θ = 56.06 degree
angle is 56.06 degree
so F = Tsinθ
18.5 = T sin(56.06)
T = 18.5 / 0.8296
tension in the rope is 22.29 N
You don't need to do any calculations, you are already given that n=1.5
n is index of refraction. it's 1.5
The correlation is 19 percent. That means there is a significant dependency of aggressive behaviour of the people on the time spent on playing video games.
It means that the more one spends time on playing video games, the more aggressive one becomes. In other words people playing video games for significant duration develop aggressive behaviour. Also, people who play less of video games are less aggressive.
19% of persons are aggressive because they spend a lot of time playing video games.
19 % of Less aggressive persons are found spend less time on playing video games.
We can say that these relations are true to a confidence level, as there have been a lot of (21) controlled experiments to support this fact.