All categories

2 years ago

The Earth rotates about its axis from west to east. What piece of evidence about the Moon can we use to support this statement?

2 answers:

8 0

The Earth's rotation has no relation to the phases of the moon.
Like everything else in the sky, the moon rises in the east just like the stars, planets, and the sun.

tatiyna2 years ago

3 0

Answer:

The correct answer is "The Moon rises in the east and sets in the west".

Explanation:

The earth rotates on its axis from west to east, the Moon seems to move from east to west through the sky. Seen from above, the Moon orbits the Earth in the same direction as our planet rotates. In this way we can support this statement, just by observing the movement of the moon around the earth and due to the fact that we always observe the same face of the moon.

Have a nice day!

You might be interested in

the two amino acids, glycine and alanine, can form two different dipeptides. Draw one of the possible dipeptides as it would app

OLEGan [10]

Answer:

The diagram is attached.

Explanation:

Peptide just refers to two or more amino acids liking together. A dipeptide consists of two amino acids linking together. A polypeptide is more that two amino acids linking together.

4 0

2 years ago

Cual es el calor específico de una sustancia que tiene una masa de 15 g y una capacidad térmica de 0.550 calC

mr Goodwill [35]

Answer:

Explanation:

Q = Ce . m .ΔT

Q : calor

Ce : calor especifico

m: masa

ΔT : variación de temperatura

capacidad térmica : 0,550 cal / °C

lectura :

por 1 °C se tiene 0,550 cal

por lo tanto tenemos datos de la temperatura y del calor

pero no olvidar las unidades en el sistema internacional :

Ce : J / kg . K

J: joules

kg: kilogramo

K: kelvin

pasar de gramos a kilogramos

pasar de calorías a joules

pasar de grado celsius a kelvin

1000g equivale a 1kg

15g equivale a 0,015 kg

K= °C + 273 ⇒ formula para pasar de grado celsius a kelvin

K= 1 + 273

K= 274

1 caloría equivale a 4,184 joules

0,550 caloría equivale a 2,3012 joules

ahora como todos los datos ya están en el S.I remplazamos en la formula

Q = Ce . m .ΔT

2,3012 = Ce . 0,015.274

Ce=0,5599 J / kg. K

6 0

2 years ago

explain why samples of gold and copper can have the same extensive properties, but not the same intensive properties

vivado [14]

Extensive properties, as volume and mass, depend on the amount of material. So, you can have a sample of gold and a sample of copper with the same volume as long as you have different amount of each one.

On the other hand, intensive properties do not depend on the amound of material but on the chemical constitution of the material. Density is an intensive property, so gold and copper have different densities. That is why you can use intensive properties to characterize different materials.

3 0

2 years ago

what is the balanced equation when copper metal is placed in a solution when platnium ii chloride is placed. what is the equatio

koban [17]

Answer:

$Cu~+~PtCl_2->Pt~+~CuCl_2$

Explanation:

In this case, we can start with the formula of Platinum (II) Chloride. The cation is the atom at the left of the name (in this case $Pt^+^2$ ) and the anion is the atom at the right of the name (in this case $Cl^-$ ). With this in mind, the formula would be $PtCl_2$ .

Now, if we used metallic copper we have to put in the reaction only the copper atom symbol $Cu$ . So, we have as reagents:

$Cu~+~PtCl_2->$

The question now is: What would be the products? To answer this, we have to remember "single displacement reactions". With a general reaction:

$A~+~BC->AB~+~C$

With this in mind, the reaction would be:

$Cu~+~PtCl_2->Pt~+~CuCl_2$

I hope it helps!

5 0

2 years ago

The answer to (3.540)x(0.0065)x(401) should have ____.

miv72 [106K]

B. Two significant figures

Your final answer can only have as many significant figures as the number that has the least amount of significant figures in it, which is (0.0065)

3 0

2 years ago