by what mechanical adjustments can you speed up or slow down an old-fashioned grandfather
pendulum clock?

a)by changing the elongation angle of the pendulum

b) by giving the pendulum a slight nudge into or against its motion direction

c) by altering the length of the pendulum
d)
either of the above works

e) none of the above works

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.

the right answer is 0.3 meters per second

a. vertically

explanation:

i tried it and took the test

if im wrong then we have different tests