Ahorizontal steel bar of uniform mass density and mass 5kg is supported by two vertical steel cables atteached to the ends of the bar. when a 75kg mass hangs from the center of the bar the tension in each cable is?

Groups of organs that work together to complete a process in the body are called: a. cells b. tissues c. nerves d. systems

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.