Answer:
μs = 0.75
μk = 0.58
Explanation:
From a force diagram:
(1)
(2)
When it starts slipping, friction force is the maximum and acceleration is 0. Replacing these conditions on (1):
Solving for μs:
μs = tan 36.7° = 0.75
When it moves at constant speed, friction force is kinetic friction and acceleration is 0. With these conditions the coefficient is:
μk = tan 30.1° = 0.58
-- water shooting out of a hose
-- writing an email
-- making hard-boiled eggs
-- driving to the dentist
-- the emission spectrum of a carbon arc
-- buying a new car
-- putting your shoes on
-- singing a song
-- cutting a tree down
-- learning to dance
-- cleaning the windows
-- building a radio
-- ironing your shirt
-- riding a bicycle
-- playing the piano
D) Pitch since it does not measure distance, media, or speed (because it only has one speed)
Equal because the book is not moving and the forces are balanced/equal
Explanation:
The given data is as follows.
Spring constant (k) = 78 N/m, 
Mass of block (m) = 0.50 kg
According to the formula of energy conservation,
mgh sin 
h = 
= 
= 0.64 m
Thus, we can conclude that the distance traveled by the block is 0.64 m.
