The answer is Hypothesis because she can predict that she needs a bigger bag
Answer:
τ = 1679.68Nm
Explanation:
In order to calculate the required torque you first take into account the following formula:
(1)
τ: torque
I: moment of inertia of the merry-go-round
α: angular acceleration
Next, you use the following formulas for the calculation of the angular acceleration and the moment of inertia:
(2)
(3) (it is considered that the merry-go-round is a disk)
w: final angular speed = 3.1 rad/s
wo: initial angular speed = 0 rad/s
M: mass of the merry-go-round = 432 kg
R: radius of the merry-go-round = 2.3m
You solve the equation (2) for α. Furthermore you calculate the moment of inertia:
Finally, you replace the values of the moment of inertia and angular acceleration in the equation (1):
The required torque is 1679.68Nm
Answer:
5.3 × 10^(-8) m
Explanation:
We are given;
Shear force; F = 400 N
Length of cube; L_o = 30 cm = 0.3 m
Shear modulus; S = 2.5 × 10^(10) N/m²
Now,the resulting relative displacement can be gotten from the formula;
F = A × S × Δx/L_o
Where Δx is resulting relative displacement
A is area.
Area of cube = (L_o)² = 0.3² = 0.09
Thus, making Δx the subject, we have;
Δx = (F × L_o)/(A × S)
Plugging in the relevant values;
Δx = (400 × 0.3)/(0.09 × 2.5 × 10^(10))
Δx = 5.3 × 10^(-8) m
Answer:
the importance that the experimental and predicted values are equal is to know the validity of the models and approximations used.
Explanation:
The different models and laws of physics create perditions on the results that must be obtained under certain conditions.
To know if these models and laws are true, experiments are designed that give experimental results, which can be compared with those predicted if the models are true and accept as correct and if they are different, the moldings are reviewed and modified to be more similar to reality.
Therefore, the importance that the experimental and predicted values are equal is to know the validity of the models and approximations used.
Answer:
When a wad of gas and heavenly dust is small and thick enough, gravity plays a epic role into turning that material into a new star.
Explanation: