All categories

3 years ago

Which two elements have similar characteristics?

Physics

2 answers:

joja [24]3 years ago

7 0

Lithium and calcium because they are in the same group.

Vanyuwa [196]3 years ago

5 0

<h2>Two Elements have similar Characteristics </h2>

Two elements have similar characteristics when they relate to the same family which indicates that they have placed in the same group in the periodic table. There are only those elements which have same properties that are present in the same group. This is because there are same properties along the same group.

Their valency also remains same along the same group. For instance, sodium (Na) and lithium (Li) are present in the same group. They have same valency which is 1 and other properties as well. Good example are electronegativity, density, melting point, boiling point, and many other features.

You might be interested in

The engine on a fighter airplane can exert a force

DerKrebs [107]

Yes it can because it had lots of force

8 0

3 years ago

A piece of solid copper, at 10oC, is dropped into a graduated cylinder of 100°C water. Which statement BEST describes the change

enot [183]

Answer:

Explanation:

just took the test

6 0

3 years ago

Read 2 more answers

You have a pulley 10.4 cm in diameter and with a mass of 2.3 kg. You get to wondering whether the pulley is uniform. That is, is

madreJ [45]

Answer:

Explanation:

Given

Diameter of Pulley=10.4 cm

mass of Pulley(m)=2.3 kg

mass of book $(m_0)=1.7 kg$

height(h)=1 m

time taken=0.64 s

$h=ut+frac{at^2}{2}$

$1=0+\frac{a(0.64)^2}{2}$

$a=4.88 m/s^2and [tex]a=\alpha r$

where $\alpha$ is angular acceleration of pulley

$4.88=\alpha \times 5.2\times 10^{-2}$

$\alpha =93.84 rad/s^2$

And Tension in Rope

$T=m(g-a)$

$T=1.7\times (9.8-4.88)$

T=8.364 N

and Tension will provide Torque

$T\times r=I\cdot \alpha$

$8.364\times 5.2\times 10^{-2}=I\times 93.84$

$I=0.463\times 10^{-2} kg-m^2$

$I_{original}=\frac{mr^2}{2}=0.31\times 10^{-2}kg-m^2$

Thus mass is uniformly distributed or some more towards periphery of Pulley

4 0

3 years ago

Countries with traditional economies are often less developed because:

3241004551 [841]

People are resistant to change, People have political freedom, Farmers institute new farming techniques and there is little need for medical facilities.

7 0

3 years ago

Read 2 more answers

Explain how an intrusive igneous rock could become a metamorphic rock and then an extrusive igneous rock.

sleet_krkn [62]

1.igneous rocks are formed when magma or lava cools and hardens
2. the cooling rate of the rock

5 0

3 years ago