A block of wood weighing 30N and of specific gravity 0.75 is ties by a string to the bottom of a tank of water in order to have the block totally immersed. What is the tension of the string?

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

What is a costume plot? why is it important to a film or theater production?

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