1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Juliette [100K]
3 years ago
13

There are ________ main groups in the modern periodic table of elements.

Physics
1 answer:
patriot [66]3 years ago
3 0
The Correct answer: 18

They are also known as families because they are in the same column.
You might be interested in
5. A helicopter scoops a load of water out of a lake, to dump on a forest fire. The helicopter exerts 6480
Strike441 [17]

Answer:

h = 250 m

Explanation:

Given that,

The helicopter exerts 6480  N of force on the water while rising high enough to fly over a mountain.

The helicopter does 1.62\times 10^6\ J of work on the water lifting it.

We need to find how high does it lift the water. Work done is given by :

W=Fh\\\\h=\dfrac{W}{F}\\\\h=\dfrac{1.62\times 10^6}{6480}\\\\h=250\ m

So, it can lift the water to a height of 250 m.

6 0
3 years ago
Which of these rotational quantities is analogous to mass in a linear system?
Rom4ik [11]

Answer:

d

Explanation:

i think it is rotational inertia

because analogue of mass in rotational motion is moment of inertia. It plays the same role as mass plays in transnational motion.  

hope it's right & helps !!!!!!!!!

5 0
2 years ago
Suppose that an electric charge is produced on one part of a body. If the charge spreads through the entire body, the body is mo
Anika [276]
<span>Suppose that an electric charge is produced on one part of a body. If the charge spreads through the entire body, the body is most likely made of metal. </span>
3 0
3 years ago
Read 2 more answers
A 1.15 kg book is at rest on the table. What is the magnitude of the normal force that the table is exerting on the book?
Agata [3.3K]

Answer:

11.27N

Explanation:

Given parameters:

Mass of the book  = 1.15kg

Unknown:

Magnitude of the normal force  = ?

Solution:

The normal force is the vertical force exerted by a body on an object.

It can be described as the weight of an object.

 Normal force  = mass x acceleration due to gravity

 Normal force  = 1.15 x 9.8  = 11.27N

5 0
2 years ago
What would be some benefits of living on a planet with less surface gravity
zepelin [54]
You could jump high!
3 0
3 years ago
Read 2 more answers
Other questions:
  • How much is one degree Celsius in temperature change ?
    9·1 answer
  • What two fundamental units that are not vector quantities
    5·2 answers
  • Momentum has a _____.<br> a. direction only<br> b. magnitude only<br> c. direction and magnitude
    14·2 answers
  • In most cases, how many electrons does it take to completely fill the
    10·1 answer
  • an object with a mass of 6 kilograms accelerates 4.0 MS to the second when an unknown force is applied to it what is the amount
    10·1 answer
  • Which of the following would not make a good insulator
    13·1 answer
  • A merry-go-round accelerates from rest to 0.75 rad/s in 33 s.
    11·1 answer
  • An automobile tire having a temperature of 3.4 ◦C (a cold tire on a cold day) is filled to a gauge pressure of 24 lb/in2 . What
    9·2 answers
  • Which government agency is responsible for protecting the nation’s transportation systems to ensure freedom of movement for pass
    10·2 answers
  • 16) A car's position in relation to time is plotted on the graph. What can be said about the car during segment B?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!