PH measures the concentration of hydrogen ions (

) in a solution. Knowing this, you can determine how acidic -or basic- your solution is.
Answer:
The equation of the time-dependent function of the position is 
(b) is correct option.
Explanation:
Given that,
Length = 12 cm
Mass = 200 g
Extend distance = 27 cm
Distance = 5 cm
Phase angle =0°
We need to calculate the spring constant
Using formula of restoring force





We need to calculate the time period
Using formula of time period

Put the value into the formula


At t = 0, the maximum displacement was 5 cm
So, The equation of the time-dependent function of the position

Put the value into the formula




Hence, The equation of the time-dependent function of the position is 
Answer:
41.2 m.
Explanation:
It takes half the time that is (5.8/2) = 2.9 seconds, for the ball to reach its apex.
Given:
S = 83 m
t = 5.8 s
vf = 0 m/s
a = - g
= - 9.81 m/s^2
Equations of motion:
i. vf = vi + a * t
ii. h = vi * t + 1/2 (a * t²)
Using the i. equation of motion:
0 m/s = vi - (9.8 m/s²) (2.9 sec)
vi = 28.4 m/s.
Using the ii. equation of motion:
h = (28.4 * 2.9 ) - 1/2 (9.8 * (2.9)²)
= 82.4 - 41.2
= 41.2 m.
Answer:
Explanation:
the sphere is solid and conducting, so the charge is uniformly distributed over its volume.