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:
Stretching vibration and bending vibration
Explanation:
1. Stretching vibration results in the variation of the bond length. There are two types of stretching vibration:
- In asymmetric bending, bonds move in and out as a result of the vibration.
- In symmetric bending, bonds move such that the bond length either gets shorter or longer.
2. Bending vibration results in the variation of the bond angle.
These can be grouped into 4 types:
- Rocking- It is that motion in which two atoms are in the motion like that of the motion of a pendulum of a clock.
- Scissoring- The motion of to atoms either away from each other or towards each other.
- Twisting- It is where the motion of the two atoms resembles that of the motion on a treadmill.
- Wagging- It is the motion in V- shape in the back and forth direction.
Answer:
Friction force is 0.1375 N
Solution:
As per the question:
Radius of the metal disc, R = 4.0 cm = 0.04 m
Magnetic field, B = 1.25 T
Current, I = 5.5 A
Force on a current carrying conductor in a magnetic field is given by considering it on a differential element:
Integrating the above eqn:
(1)
Now the torque is given by:
(2)
From eqn (1) and (2):
Thus the Frictional force is given by:
Answer:
is high as 100 degrees c
Explanation:
due to high heat gas expands fast than normal
The question is not so clear as to what "roughly proportional" means but we will try to deduce the relationship by simple linear regression. Two cases will be used, its either the sugar content is directly proportional to the caloric value or an inverse relationship is present. This can be easily done using MS excel.
let y = caloric value
x- sugar content
For direct proportionality
y = kx
for inverse relationship
y = k/x
the measure here is the r^2 (i forgot the proper statistical term) in which a value closer to 1 would mean that the expression gives a model which describes the proportionality of the data.
I tried using the linear relatioships but both did not get satisfactory results.
However, I tried fitting the data in a 2nd order polynomial and the result is good, in fact the r^2 is 1. Use the MS excel to do this.
the equation to describe the relationship is
y (calories/mL) = 504.67x^2 - 53.002x + 1.3003
however please be casreful in using this relationship since some values of x (sugar content) will yield negative values. It'll be best to try another model (logarithmic or exponential)