A 2.5-kg box, sliding on a rough horizontal surface, has a speed of 1.2 m/s when it makes contact with a spring (see the figure). The block comes to a momentary halt when the compression of the spring is 5.0 cm. The work done by the friction, from the instant the block makes contact with the spring until is comes to a momentary halt, is -0.50 J. 
(a) What is the spring constant of the spring?
(b) What is the coefficient of kinetic friction between the box and the rough surface?
Definitions:
Performance Appraisal
The assessment of an employee's job performance and productivity, typically for purposes of performance feedback, development, or evaluation.
Projection
A defense mechanism where individuals attribute their own unacceptable thoughts, feelings, and motives to another person.
Self-Awareness
The ability to understand our emotions and their impact on us and others.
Empathy
The ability to understand and share the feelings of others, often leading to supportive and compassionate behavior.
Q10: A sealed 26- m<sup>3</sup> tank is filled
Q18: Beings on spherical asteroid Π have observed
Q22: In the figure, determine the character of
Q25: Which of the following is a nonnucleoside
Q35: A 25 kg object is undergoing lightly
Q44: If a tree is 15 m tall,
Q46: The walls of an ice chest are
Q65: In an isochoric process, the internal (thermal)
Q84: What is the net power that a
Q87: Swimmers at a water park have a