In an experiment there are three types of variables: Independent, dependent and constant variables.
The variable being tested and the parameters of which can be changed is the Independent variable. Here, the cleaning product is the independent variable.
Dependent variables are the ones which vary when change in the independent variable is made. How clean the counter is the dependent variable which is depending on the cleaning product (the independent variable).
Constant variables are the ones which are kept unchanged during the experiment so that it does not affects the result of the experiment. In the given experiment, the amount of cleaning product and the brand of the paper towel are the constant variables. Other constant variables can be the size of the paper towel, the technique of wiping, the temperature etc.
Answer:
0.614 nm
Explanation:
Energy of the nth state of one dimensional infinite wall is,
Given the energy to excite an electron from ground state to first excited state is,
And the Plank's constant is, 
Mass of electron,
Now the energy will of a 1 dimensional infinite wall which excite an electron from ground state to first excited state will be,
Put all the variables in above equation and rearrange it for L.
Therefore the width of the box is 0.614 nm.
Answer:
Explanation:
Given that
Force is acting in the positive x direction,
Then F = 12.5 •i
The displacement is given as
d = 6 •i — 8 •j
Then,
Work done?
Work done is given as the dot product of force and displacement
W = F•d
W = 12.5i •(6i — 8j)
Note that,
i•i = j•j = 1
i•j = j•i = 0
Then,
W = (12.5×6)(i•i) —(12.5×8)(i•j)
W = 75 —0
W = 75J
work is done by the given force during this displacement is 75J
Answer:
incomplete information
Explanation:
Where is diagram? no point A and point B given
