Which two statements are true about a system? a)A system is a group of objects analyzed as one unit.
b)Energy that moves across system boundaries is conserved.
c)There’s only one way to define the boundaries of a system.
d)All systems are made by humans.

Along, straight wire with 3.0 a current flowing through it produces magnetic field strength 1.0 t at its surface. if the wire has a radius r, where within the wire is the field strength equal to 36.0% of the field strength at the surface of the wire? assume that the current density is uniform throughout the wire

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.