cation
anion is negatively charged, so more electrons then protons,
cation is positively charged, so more protons thatn electrons
Answer:
Elastic Potentional Energy is with the second answer
Mechanical Energy is with the last answer
Gravitational Potential Energy is with the first answer
Explanation:
Sorry this took so long it was a bit hard to remeber at first but I got it :)
Mark me as branliest if it is correct
Answer: 89.803 ft
Explanation:
The complete question is written below:
An astronaut on the moon throws a baseball upward. The astronaut is 6ft, 6 in. tall and the initial velocity of the ball is 30 ft per second. The height s of the ball in feet is given by the equation,s=-2.7t^2+30t+6.5, where t is the number of seconds after the ball is thrown.
The ball will never reach a height of 100ft. How can this be determined algebraically?
We have the following equation that expresses the height as a function of time:
(1)
Now, if we wan to find the maximum height the baseball reaches and prove it is less than 100 ft, we firstly have to find the time the whole parabolic movement lasts and then find which is the time it takes the baseball to reach its maximum height.
So, if we want to calculate , this is fulfilled when , when the baseball hits the ground:
(2)
This is a quadratic equation of the form , and we have to use the quadratic formula if we want to find :
(3)
Where , ,
Substituting the known values and choosing the positive result of the equation:
(4)
Then we can calculate :
(5)
(6)
Substituting (6) in (1):
(7)
(8) This is the maximum height the baseball reaches, as we can see it is less than 100 ft
Answer:
Explanation:
Digital signals:
Converted into binary code
More reliable
Used by computers
Intervals
Analog signals:
Less reliable
Used by landline telephones
All electromagnetic waves
Continous
Both:
Transmitted as pulse