The net force on the sledge is 31.64N.
Frictional force = µkR
= 0.269 x 42.2 x 9.81 = 111.36
net force = 143N - 111.36N
= 31.64N
refer brainly.com/question/24557767
#SPJ2
Answer:
Phosphorus (P)
Explanation:
f = 0.5 Hz
frequency = f
wave length = l
speed of wave = v
f = v/l → f = 3/6 = ½ = 0.5 Hz
Frequency= 12.5
See i pic...
Distance is 13m and Displacement is 9m
