A group of students on a trekking trip understands that they must continue travelling east to reach the destination. To understand the direction, they used a magnetic needle inserted in cork and placed in a bowl of water. After sometime, the needle settled in a certain direction as shown in the image. Which direction should the group of students travel to reach their destination?

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600