Object A has 3 excess (extra) electrons, and is held near a piece of paper, which also has 3 excess electrons. If Object A is replaced by Object B, which has 3 excess protons instead,
what will have changed?

Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 × 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.

3. on your graph, the data points between the black squares are data for elements with atomic numbers 3 through 9. locate these elements on your periodic table. what term or description would you use to identify these elements with respect to the periodic table?

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f