For Science fair project you can do convection current
Explanation:
Show how to do the process
and then make a model to demonstrate
Materials required:
Potassium Permanganate,beaker,bunsen burner,water and retort stand
Cathode Ray Tube i think?
Answer:to transfer electric current from one point to another
Explanation:
To transfer electric current from one point to another
The uncertainty of the heavy object if the scale remains constant is 0.24 lbs.
<h3>What is uncertainty in measurement?</h3>
- This is the error associated in an attempt measure the object accurately.
The percent uncertainty in measuring the light weight object is calculated as follows;

The uncertainty of the heavy object if the scale remains constant is calculated as follows;

Learn more about percent uncertainty here: brainly.com/question/5493941
Answer:

Also as we can see the equation that heat flux directly depends on the temperature gradient so more is the temperature gradient then more will be the heat flux.
For positive temperature gradient the heat will flow outwards while for negative temperature gradient the heat will flow inwards
Explanation:
As we know that heat flux is given by the formula

here we know that
K = thermal conductivity
= temperature gradient
now we know that

also we know that
K = 1.7 W/mK
now we have

so temperature gradient is given as

also in other unit it will be same

Also as we can see the equation that heat flux directly depends on the temperature gradient so more is the temperature gradient then more will be the heat flux.
For positive temperature gradient the heat will flow outwards while for negative temperature gradient the heat will flow inwards