Answer:
demagnetization answer☝️☝️☝️
Answer:
Explanation:
A) 215 + 45.0 = 260 km/h West
B) 215 - 45.0 = 170 km/h West
C) √(215² + 45.0²) = 219.6588... 220 km/h
θ = arctan(45.0/215) = 11.8214... 11.8° S of W
It's the first one. Believe me I always missed this question in class, never is ask a question first. Hypothesis is first.
Answer:
57.1 N
Explanation:
The force of friction experienced by the sled is given by:
where
is the coefficient of friction
N is the normal reaction exerted by the snow on the sled
For a flat surface, the normal reaction is equal to the weight of the object:
N = mg
where
m = 53.0 kg is the mass of the sled
g = 9.8 m/s^2 is the acceleration of gravity
Substituting the second equation into the first one, we find: