(3) An unknown charge placed at the origin exerts a downward force of 50 N on a +80 µC charge that is located at (0, 60 cm) relative to the origin. (A) Calculate the electric field acting on the +80 µC charge.

B) What is the magnitude and the sign of the unknown charge?.​

9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?

The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (c3h8) to burn it completely. for every gram of propane that flows through the burner, what volume of air is needed to burn it completely? assume that the temperature of the burner is 195.0°c, the pressure is 1.05 atm, and the mole fraction of o2 in air is 0.210.