John walks 3\, \text m3m3, start text, m, end text east and 4\, \text m4m4, start text, m, end text north. What is the magnitude of his total displacement in \text mmstart text, m, end text?

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.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?