All categories

3 years ago

How are the elements on the periodic table organized according to their properties

Physics

1 answer:

vekshin13 years ago

5 0

Answer:

They are ordered based on Atomic number, the number of protons they have. The groups(columns) are based on their reactivity.

You might be interested in

You connect a voltmeter to an unknown resistor in a circuit in order to measure the potential difference across that resistor. H

scZoUnD [109]

Answer:

option (a)

Explanation:

To make a galvanometer into voltmeter, we have to connect a high resistance in series combination.

The voltmeter is connected in parallel combination with teh resistor to find the voltage drop across it.

An ideal voltmeter has very high resistance that means it has a resistance as infinity.

8 0

4 years ago

Read 2 more answers

The force that opposes motion to moving parts is _____

Colt1911 [192]

The force that opposes motion to moving parts is F<span>riction</span><span>

Hope this helped!
</span>

6 0

4 years ago

You observed three different star clusters and found that the main-sequence turnoff stars in cluster 1 had spectral type A, the

9966 [12]

Answer: Cluster 3 (D)

Explanation: Cluster 3 is the oldest and it could be the source from which cluster 2 and 3 got their spectral type from.

4 0

4 years ago

Read 2 more answers

A wire of resistance 5.9 Ω is connected to a battery whose emf ε is 4.0 V and whose internal resistance is 1.2 Ω. In 2.9 min, ho

dexar [7]

Answer:

a) 390J

b) 322J

c) 68J

Explanation:

We need to calculate the power given by the battery. the power is given by:

$P=V*I\\I=\frac{V}{R}\\I=\frac{4}{5.9+1.2}\\I=0.56A\\P=2.24W$

Watts is J/s so:

$E=P*t\\E=2.24\frac{J}{s}*2.9min*(60\frac{s}{min})=390J$

The thermal energy in the wire is given by:

$E_w=P_w*t\\P_w=I^2*R_w=0.56^2*5.9=1.85W\\E_w=1.85\frac{J}{s}*2.9min*(60\frac{s}{min})=322J$

And the the dissipated thermal energy in the battery will be the remainig energy:

$E_b=E-E_w\\E_b=390-322=68J$

4 0

4 years ago

In most cases, letters of reconmendation are required for addmission to?

kykrilka [37]

Answer:

Get your recommenders to mention diverse achievements. ...

Help your recommenders with relevant info. ...

The letter should always include examples of things you did. ...

The letter should show how you improved over time. ...

The tone of the letter should not be too dry.

8 0

3 years ago