Answer:
One of the most useful use of expansion by heat is for swiches onmany tyes of machinery and home appliancesThemostats in the millions of cars are poerated by using the eaxpansion of metal Themometers arre another example,
Answer:
Explanation:
a. Is the sphere charged negatively or positively?
The sphere us negatively charged. In a Millikan type experiment, there will be two forces that will be acting on the sphere which are the electric force which acts upward and also the gravity which acts downward.
Because the upper plate is positively charged, there'll what an attractive curve with an upward direction which will be felt by the negatively charged sphere.
b. What is the magnitude of the electric field intensity between the plates?
The magnitude of the electric field intensity between the plates is 18400v/m.
C. Calculate the magnitude of the charge on the latex sphere.
The magnitude of the charge on the latex sphere hae been solved and attached
d. How many excess or deficit electrons does the sphere have?
There are 5 excess electrons that the sphere has.
Check the attachment for further explanation.
Answer:
The minimum distance has to be 15ft
Explanation:
Since car A is behind, I am fixing the origin in that point.
Now, let's calculate the position, for both cars at the end of everything, measured from the origin.
I am using this formula for
For car A:
And we also know that , So:
For car B:
Replacing the values we get:
To avoid a collision, , so:
165 ≤ d + 150 If we solve for d: d ≥ 15ft
He proposed the scientific method. He thought it was best to base a theory on observation instead of think of a theory and then try to prove it. So the answer would be A.