When conducting scientific research, any information that is found must be analyzed to determine its validity. joel is a firm believer that exposure to cold weather can cause the common cold. he conducts online research about this topic. of the excerpts below, which would be considered biased? a. the flu and the common cold are caused by viruses. b. viruses are passed by contact between people. c. cold and flu season occurs when the weather is cold, so there must be a connection. d. all of the above excerpts are biased.

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?