Use the image to complete the sentences. Two different substances, Substance A and Substance
B, are in direct contact with each other and are at
different temperatures.
The particles in Substance B are vibrating
v the particles in Substance A. This means
Substance B is
Substance A
and conduction will
A
B

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.