The practice of science can answer only scientific questions. And scientific question’s guide the design of investigations. What must be true of the
possible answers to a scientific question?
A. They could be shown to be false by evidence.
B. They support an established scientific theory
C. They do not require the use of physical measurements.
D. They are at odds with established scientific theories,

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?