Answer:
The correct answer to the following question will be "B is younger than D".
Explanation:
- In geology as well as important aspects, that stratum seems to be a coating of sedimentary rock, and perhaps igneous rock produced mostly on the planet's surface, including locally compatible features that make anything from other levels or layers.
- Hardness or structure including its rock to classify the surfaces from which they formed. Usually, the larger and denser the molecules are, the older that rock as well as the deeper its surface it originated from. Toughness could be evaluated using a straightforward fingernail as well as a pocket platform.
So that the above is the right answer.
A 1Msun star in a closed binary system with a 2Msun star.
Systems in which the two stars are close to each other are called close binary star system.
The most massive stars have the shortest lifespans. The reason is that they have most fuel, they burn it so enormously that their lifetimes are very short. As a 1Msun star in a closed binary system with a 2Msun star becomes the massive star so it has the shortest life expectancy.
a. No, an isolated 1Msun star has not the shortest life expectancy.
b. No, a 1Msun star in a closed binary system with a 0.8Msun star has not the shortest life expectancy.
c. Yes, A 1Msun star in a closed binary system with a 2Msun star has the shortest life expectancy.
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Answer:
Explanation:
The work of force 2 will be given by the vectorial equation . We know the value of and have information about its movement, which relates to the net force .
About this movement we can obtain the acceleration using the equation . Since it departs from rest we have .
And then using Newton's 2dn Law we can obtain the net force F=ma, thus we will have
And we had the work done by force 2 as:
(The sign will be given algebraically since we take positive the direction to the right.)
With our values:
<em>Another (shorter but maybe less intuitive way for someone who is learning) way of doing this would have been to say that the work done by both forces would be equal to the variation of kinetic energy:</em>
<em></em>
<em>Which leads us to the previous equation straightforwardly.</em>
Answer:
a) El número de neutrones de Cl-35 es 18 y del Cl-37 es 20.
b) La masa atómica media del cloro es 35.5 uma.
c) En 15 g de cloro hay 2.55x10²³ átomos.
Explanation:
a) Para calcular los protones y neutrones de los isótopos Cl-35 y Cl-37 debemos usar la siguiente fórmula:
En donde:
Z: es el número de protones = 17
N: es el número de neutrones
A: es la masa atómica
Los isótopos de un elemento dado tienen el mismo número de protones (número atómico) y en ellos sólo varia la la masa atómica (y por ende el número de neutrones); por lo que el Cl-35 y Cl-37 tienen igual Z (17).
Para el Cl-35 tenemos:
Y para el Cl-37 tenemos:
Por lo tanto, el número de neutrones de Cl-35 es 18 y del Cl-37 es 20.
b) La masa atómica media del cloro está dada por:
Entonces, la masa atómica media del cloro es 35.5 uma.
c) Para encontrar el número de átomos de Cl que hay en 15 g debemos usar el número de Avogadro (6.022x10²³ átomos/mol):
Finalmente, en 15 g de cloro hay 2.55x10²³ átomos.
Espero que te sea de utilidad!
constant voltage of 100 volts and a resistance of 500 ohms.
<span>I = 100 / 500. Current = 0.2 amps </span>
<span> resistance to 200 ohms. I = 100 / 200. Now the current is 0.5 amps.</span>
As we also know that Voltage is directly proportional to the current
Resistance is the proportionality constant.