Hree boxes rest side-by-side on a smooth, horizontal floor. their masses are 5.0 kg, 3.0 kg, and 2.0 kg, with the 3.0-kg mass in the center. a force of 50 n pushes on the 5.0-kg box, which pushes against the other two boxes. what magnitude force does the 5.0-kg box exert on the 3.0-kg box?

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.

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

How do you know how many valence electrons an atom has?