Fish are hung on a spring scale to determine their mass. (a) what is the force constant of the spring in such a scale if the spring stretches 8.00 cm for a 10.0 kg load? (b) what is the mass of a fish that stretches the spring 5.50 cm? (c) how far apart are the half-kilogram marks on the scale?

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

In the first law of thermodynamics, triangle e=q-w, what does q stand for