Samples of different materials, A and B, have the same mass, but the sample of B is higher in density. Which statement could explain why this is so? A. The particles that make up material A are more closely packed together than the particles that make up material B.
B. The sample of material B has greater volume than the sample of material A.
C. The particles that make up material B are more closely packed together than the particles that make up material A.
D. The particles that make up material A have more mass than the particles that make up material B.

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience. b. report the adverse drug experience to the irb only if there are several other occurrences. c. report the adverse drug experience as part of the continuing review report. d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.

Select the three ways that the parallel-plate capacitor differs from a car battery.