El diagrama del circuito de la figura 1 tiene los siguientes valores: 1 = 6,00 V, 2 = 4,00 V, y las resistencias tienen los siguientes valores: 1 = 12,0 Ω, 2 = 4,00 Ω, 3 = 6,00 Ω y 4 = 8,00 Ω. El circuito se encuentra en funcionamiento tanto con el interruptor abierto(Figura 1 (a)) como con el interruptor cerrado (Figura 1 (b)). Para el circuito encuentre lo siguiente: a) Describa que sucede con la diferencia de potencial entre los nodos a los que está
conectado el interruptor cuando está abierto y cuando está cerrado. En cuál de ellos
la diferencia de potencial debe ser mayor, si el interruptor se comporta como un
cable sin resistencia. Justifique su razonamiento.
b) Calcule la resistencia equivalente de los resistores que esta conectados al
interruptor 1 en las condiciones de abierto y cerrado. (Entre los puntos azules)
c) Encuentre las corrientes que circulan por cada resistor que está conectado en el
circuito cuando el interruptor está abierto.
d) Encuentre las corrientes que circulan por cada resistor que está conectado en el
circuito cuando el interruptor está cerrado.
e) Calcule la potencia que entregan las baterías en el caso en que el interruptor se
encuentre abierto o cerrado. ¿En cuál de los casos las baterías entregan más
potencia?

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

Fill in the blanks with the numbers is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance

The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 × 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g