All categories

3 years ago

Thinking and questioning is the start of the scientific inquiry process

1 answer:

3 0

Explanation:The scientific inquiry process is the process in which scientists or researchers find an explanation for any natural world phenomena with logic and evidence collected by the systemic method or work. The scientific inquiry process begins with a question or thinking (observation) for any natural phenomena like why freshwater has low albedo where ice has a high albedo percentage.

You might be interested in

The formula for water is H20. What does the formula H2O tell us about the composition of water?

Llana [10]

H2O is the chemical formula of water. It means that each molecule of water is made up of two hydrogen atoms, indicated by the letter H, and a single oxygen atom, represented by the O. Water is a chemical substance with no smell, taste, or color.

4 0

3 years ago

Which part of an object's rate of change best defines acceleration?

Marat540 [252]

Answer:

Velocity

Explanation:

The change of velocity rate it's the definition of acceleration.

While increasing or decreasing velocity, it means that an acceleration it's happening.

Using some math:

$a=\frac{dv}{dt}$

This can be read as "the acceleration it's equal to te variation of velocity with respect to time"

8 0

4 years ago

1. Girona y Castellón están separadas 360 km. Un tren sale de Girona hacia Castellón con

Vlad [161]

Answer:

Ambos trenes tardarán 2 horas y 24 minutos en cruzarse.

Explanation:

Dado que el tren que sale de Girona lo hace una hora antes que el que sale de Castellón, y que circula a 108 km/h, al momento en que el tren que parte de Castellón inicia su recorrido la distancia entre ambos trenes, que en principio es de 360 km, se ha reducido a 252 km (360 - 108).

Así, luego de la primer hora de recorrido, ambos trenes se separan por 252 km. A la segunda hora, el tren de Girona ha recorrido otros 108 km, mientras el tren de Castellón ha recorrido 72 km, es decir, en total han acortado otros 180 km, con lo cual la distancia entre ambos ahora es de 72 km (252 - 180).

Ahora, para la última parte del recorrido, se debe dividir el horario. Así, el tren de Girona recorre 108 km en una hora, con lo cual, en 20 minutos, puede recorrer 36 km. A su vez, el tren de Castellón puede recorrer en el mismo tiempo 24 km, con lo cual, tras 2 horas y 20 minutos, la distancia entre ambos es de 12 km (72 - 60).

Para los últimos 12 km, debe dividirse el horario por un número menor. Así, en 4 minutos (60 / 15 = 4), el tren de Girona recorre 7.2 km (108 / 15 = 7.2), mientras que el tren de Castellón recorre 4.8 km (72 / 15 = 4.8). Así, dado que 7.2 + 4.8 es igual a 12, es decir, los km que faltaban para que ambos trenes se cruzaran, el tiempo en el cual ambos trenes tardarán en cruzarse es de 2:24 horas.

7 0

3 years ago

This is for my wonderful boy friend Putting my defenses up

Veronika [31]

Answer:

oh thats a bomb song tho i love

6 0

3 years ago

Read 2 more answers

In order to prepare 50.0 mL of 0.100 M NaOH you will add _____ mL of 1.00 M NaOH to _____ mL of water

FinnZ [79.3K]

The question requires us to complete the sentence regarding the preparation of a more dilute NaOH solution (0.100 M, 50.0 mL) from a more concentrated NaOH solution (1.00 M).

Analyzing the blank spaces that we need to fill in the sentence, we can see that we must provide the volume of the more concentrated solution and the volume of water necessary to prepare the solution.

We can use the following equation to calculate the volume of more concentrated solution required:

$\begin{gathered} C_1\times V_1=C_2\times V_2 \\ V_1=\frac{C_2\times V_2}{C_1} \end{gathered}$

where C1 is the concentration of the initial solution (C1 = 1.00 M), V1 is the volume required of the inital solution (that we'll calculate), C2 is the concentration of the final solution (C2 = 0.100 M) and V2 is the volume of the final solution (V2 = 50.0 mL).

Applying the values given by the question to the equation above, we'll have:

$\begin{gathered} V_1=\frac{C_2\times V_2}{C_1} \\ V_1=\frac{0.100M_{}\times50.0mL_{}}{1.00M_{}}=5.00mL \end{gathered}$

Thus, we would need 5.00 mL of the more concentrated solution.

Since the volume of the final solution is 50.0 mL and it corresponds to the volume of initial solution + volume of water, we can calculate the volume of water necessary as:

$\begin{gathered} \text{final volume = volume of initial solution + volume of water} \\ 50.0mL=5.00mL\text{ + volume of water} \\ \text{volume of water = 45.0 mL} \end{gathered}$

Thus, we would need 45.0 mL of water to prepare the solution.

Therefore, we can complete the sentence given as:

"In order to prepare 50.0 mL of 0.100 M NaOH you will add 5.00 mL of 1.00 M NaOH to 45.0 mL of water"

5 0

1 year ago