Slower towards the black hole
Answer:
l = 10.16 m
Explanation:
In this case, we have the period of oscillation of the pendulum is 6.4 s. It is required to find the height of the tower.
We know that the pendulum executes SHM. Let l is the height of the tower. The time period of simple pendulum is given by :

g is acceleration due to gravity
We need to rearrange the above equation such that,

So, the height of the tower is 10.16 m.
Explanation:
Initial speed of blood, u = 0
Final speed of the blood, v = 26 cm/s
(a) Displacement of the blood, d = 2 cm
Let a be its acceleration. It can be calculated using third equation of motion as :



(b) Let t is the time taken by the blood to reach its final speed. It can be calculated as :
<u>
</u>

t = 0.15 s
Hence, this is the required solution.
Independent variable
The independent variable is the variable that is controlled and manipulated by the experimenter. For example, in an experiment on the impact of sleep deprivation on test performance, sleep deprivation would be the independent variable.
Answer:
velocity and acceleration are zero.