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
Rama09 [41]
3 years ago
5

Atoms in Group 18 elements are inert (chemically unreactive) because ___________________________. A they combined to form molecu

les. B they have no valence electrons. C they have filled inner energy levels. D they have a full valence shell.
Physics
2 answers:
finlep [7]3 years ago
8 0

Answer:

thats correct

Explanation:

Rom4ik [11]3 years ago
6 0

When you say full valence shell, are you talking about a valence electron shell?

I am learning about atoms and i know a little bit

You might be interested in
Viscosity: Blood is about 4 to 5 times ____________ viscous than water. Viscosity of blood depends upon the amount of dissolved
kherson [118]

Answer:more, increased

Explanation:

Blood is four to five times more viscous than water.

Viscosity depends upon dissolved substances in blood and it increases as the amount is increases or if the fluid in the blood decreases.

Viscosity is the resistance offered by liquid to the flow and it also depends upon temperature and it decreases with increase in temperature.      

8 0
3 years ago
Question 7
VLD [36.1K]

Answer: m= 4kg

Explanation:

Use equation for force:

F=m*a

F=20 N

a=5 m/s²

m=?

1N=kg*m/s²

---------

F=m*a

m=F/a

m=(20 kg*m/s²)/5m/s²

m=4kg

3 0
3 years ago
Which is best used with a bar magnet to produce an electric current?
Charra [1.4K]
A complete loop/ring of wire
3 0
4 years ago
Mathematically, explain how a car (A) with mass of 500 kg and velocity of 2 m/s has the same kinetic energy as a car (B) with ma
scoray [572]

Answer:

<em>Both kinetic energies are equal</em>

Explanation:

<u>Kinetic Energy </u>

Is the type of energy of an object due to its state of motion. It's proportional to the mass and the square of the speed.

The equation for the kinetic energy is:

\displaystyle K=\frac{1}{2}mv^2

Where:

m = mass of the object

v = speed of the object

The kinetic energy is expressed in Joules (J)

There are two cars:

Car (A) with mass ma=500 kg and speed va= 2 m/s

Car (B) with mass mb=20,000 gr and speed vb= 10 m/s

Calculate the kinetic energy of both cars:

\displaystyle K_a=\frac{1}{2}m_av_a^2

\displaystyle K_a=\frac{1}{2}500*2^2

\displaystyle K_a=250*4=1,000 J

To calculate the Kb, the mass must be expressed in kg:

mb=20,000/1,000 =20 Kg

\displaystyle K_b=\frac{1}{2}m_bv_b^2

\displaystyle K_b=\frac{1}{2}20*10^2

\displaystyle K_b=10*100=1,000 J

Both kinetic energies are equal

8 0
3 years ago
Objects with masses of 135 kg and a 435 kg are separated by 0.500 m. Find the net gravitational force exerted by these objects o
IrinaVladis [17]

Answer:

The net gravitational force on the mass is 1.27\times 10^{-5}

Explanation:

We have by Newton's law of gravity the force of attraction between masses m_{1},m_{2}

F_{att}=G\frac{m_{1}m_{2}}{r^{2}}

Applying vales we get

Force of attraction between 135 kg mass and 38 kg mass is

F_{1}=6.67\times 10^{-11}\frac{135\times 38}{(0.25)^{2}}\\\\F_{1}=5.47\times 10^{-6}N

Force of attraction between 435 kg mass and 38 kg mass is

F_{2}=6.67\times 10^{-11}\frac{435\times 38}{(0.25)^{2}}\\\\F_{2}=1.76\times 10^{-5}N

Thus the net force on mass 38.0 kg is F_{2}-F_{1}=1.76\times 10^{-5}-5.47\times 10^{-6}\\\\F_{2}-F_{1}=1.27\times 10^{-5}

8 0
4 years ago
Other questions:
  • Heat transfer from the Sun to the Moon is mostly through the process of *
    13·2 answers
  • Would the speed of an EM wave be the same in air and in water? Defend your answer.
    10·2 answers
  • Technician A says that if starter drive clearance is too small, the starter will produce a noise during cranking. Technician B s
    6·1 answer
  • 2. A tiny pig is dropped from the top of a building and lands safely on a trampoline. The tiny pig will have
    11·1 answer
  • What is the main unit in metric system?
    8·1 answer
  • Which of the following are good safety measures during a thunderstorm? A. Talk on a phone with a cord. B. Go inside a closed bui
    12·2 answers
  • A car is sitting motionless on top of a bridge. The bridge pushes up on the car with a force of 782 Newtons.
    7·1 answer
  • The word igneous comes from the Latin word for fire. However, the name is inaccurate. The rocks are not created with flames. Ins
    12·2 answers
  • Can someone help me
    14·1 answer
  • The overall charge of an ionic compound is ______________. a. always positive b. usually positive c. usually negative d. usually
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!