Answer:
uk = 0.25
Explanation:
Given:-
- An object comes to stop with acceleration, a = -2.45 m/s^2
Find:-
What is the coefficient of kinetic friction between the object and the floor?
Solution:-
- Assuming the object has mass (m) that slides over a rough surface with coefficient of kinetic friction (uk). There is only Frictional force (Ff) acting in the horizontal axis on the object opposing the motion (-x direction).
- We will apply equilibrium equation on the object in vertical direction.
N - m*g = 0
N = m*g
Where, N : Contact force exerted by the surface on the floor
g : Gravitational acceleration constant = 9.81 m/s^2
- Now apply Newton's second law of motion in the horizontal ( x-direction ):
- Ff = m*a
- The frictional force is related to contact force (N) by the following expression:
Ff = uk*N
- Substitute the 1st and 3rd expressions in the 2nd equation:
uk*m*g = -m*a
uk = a / g
- Plug in the values and solve for uk:
uk = - (-2.45) / 9.81
uk = 0.25
The net charge of pantothenate is -1 whereas the net charge of phosphopantothenate is −2 in aqueous solution at pH 7.
<h3>What is the net charge of both pantothenate and phosphopantothenate?</h3>
At pH 7, the carboxylic acid of pantothenate will lose one hydrogen ion which leads to a net charge of −1 on pantothenate while on the other hand, the phosphate group of phosphopantothenate will lose two hydrogen ions (−2) so −2 charge appear on the phosphopantothenate.
So we can conclude that The net charge of pantothenate is -1 whereas the net charge of phosphopantothenate is −2 in aqueous solution at pH 7.
Learn more about charge here: brainly.com/question/25923373
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Answer:
D physiological condition
Explanation:
Sensation and perceptions are complimentary to each other but have different roles within the brain. Sensations are the process of experiencing the world with the five senses and sending that information to the brain. Perceptions are the way we interpret sensations.
I would assume gamma rays because they have the fastest moving partials out of all of them
