Final answer:
The weight of the box is 98 N and the coefficient of friction between the box and the surface is 0.2041.
Step-by-step explanation:
The weight of the box can be found using the formula weight = mass * gravity, where the mass is 10 kg and the acceleration due to gravity is approximately 9.8 m/s². Thus, the weight of the box is 10 kg * 9.8 m/s² = 98 N.
To determine the coefficient of friction between the box and the surface, we can use the formula:
friction force = coefficient of friction * normal force.
Since the friction force is given as 20 N and the weight of the box is 98 N, the normal force is also 98 N.
Therefore, the coefficient of friction is 20 N / 98 N = 0.2041.