Answer:

Explanation:
It is given that,
Mass of Albertine, m = 60 kg
It can be assumed, the spring constant of the spring, k = 95 N/m
Compression in the spring, x = 5 m
A glass sits 19.8 m from her outstretched foot, h = 19.8 m
When she just reach the glass without knocking it over, a force of friction will also act on it. Using the conservation of energy for the spring mass system such that,




So, the coefficient of kinetic friction between the chair and the waxed floor is 0.101. Hence, this is the required solution.
Answer:
The correct answer is A. The sun is the energy source of the surface currents in the ocean
Answer:
I think the answer is
C) iron nails are attracted towards all materials
Answer:
yes
Explanation:
velocity changes either in magnitude (an increase or decrease in speed) or in direction, or both