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
hichkok12 [17]
3 years ago
8

Explain what happens to the average kinetic energy, thermal energy, and temperature of a substance when the particles in the sub

stance slow down
Physics
2 answers:
pochemuha3 years ago
4 0
Kinetic, thermal, and the temperature of the substance all decrease when the particles slow down.
sergeinik [125]3 years ago
4 0

Answer:

Average kinetic energy decreases

Thermal energy decreases

Temperature decreases

Explanation:

As the particles in a substance slow down then the kinetic energy of all the molecules will decreases.

As we know that kinetic energy is given as

KE = \frac{1}{2}mv^2

As we know that sum of kinetic energy of all the molecules is the molecules is known as internal thermal energy.

So here since kinetic energy decreases so internal thermal energy also decreases.

Now as we know that total internal thermal energy directly depends on temperature as

U = \frac{3}{2}nRT

so here as internal thermal energy decreases so its temperature also decreases.

You might be interested in
What tells you how far/how tall/how long something is? *The answer is 6-letters and the second letter is a "e" and the fifth let
rosijanka [135]
Length is the answer because it's six letters
4 0
3 years ago
The brakes exert a 1,951 N force on a car weighing 18,985 N and moving at 12 m/s. The car finally stops. How long (in seconds) d
nata0808 [166]

Answer:20,000

Explanation:

7 0
3 years ago
A railroad car having a mass of 15 Mg is coasting at 1.5 m/s on a horizontal track. At the same time another car having a mass o
luda_lava [24]

Answer:

Explanation:

We shall apply law of conservation of momentum to know velocity after collision . Let it be v .

total momentum before collision = total momentum after collision

15 x 1.5 - 12 x .75 = ( 15 + 12 ) v

v = .5 m /s

kinetic energy before collision

1/2 x 15 x 1.5² + 1/2 x 12 x .75²

= 16.875 + 3.375

= 20.25 J

kinetic energy after collision

= 1/2 x ( 15 + 12 ) x .5²

= 3.375 J

Loss of energy = 16.875 J

This energy appear as heat and sound energy that is produced during collision .

4 0
3 years ago
A 2000-kg railway freight car coasts at 4.4 m/s underneath a grain terminal, which dumps grain directly down into the freight ca
ruslelena [56]

Answer:

933. 3kg

Explanation:

We are given that

Mass,m=2000 kg

Initial speed,u=4.4 m/s

We have to find the maximum mass of grain if the speed of loaded freight car must not go below 3.0 m/s.

Final speed,v=3 m/s

By conservation of momentum

Initial momentum=Final momentum

mu=m'v

Substitute the values

2000\times 4.4=m'(3)

m'=\frac{2000\times 4.4}{3}

m'=2.93\times 10^3 kg

Mass of freight loaded car=2933.3 kg

Mass of grains=2933.3-2000=933.3 kg

Hence, the maximum  mass of grains that it can accept=933.3 kg

7 0
3 years ago
Calculate the change in gravitational potential energy when a 10kg object falls from 6m on earth
Makovka662 [10]

Answer:

600

Explanation:

GPE=mgh (mass*gravitational force*height)

m=10 kg

g=10

h=6m

10*10*6= 600 Joules

8 0
2 years ago
Other questions:
  • A man applies a force of 100 N to a rock for 60 seconds, but the rock does not move what is the amount of work done by the man o
    12·1 answer
  • A magnetic pickup is used to detect the shaft speed of an experimental high speed compressor. a gear with 12 teeth is used to ex
    9·2 answers
  • Which kinds of objects emit visible light in the electromagnetic spectrum?
    13·1 answer
  • A customer sits in an amusement park ride in which the compartment is to be pulled downward in the negative direction of a y axi
    7·2 answers
  • Question 5
    6·1 answer
  • Which of two factors influence the weight of an object due to gravitational pull?
    8·1 answer
  • A person raises a box with a weight of 50 newtons by 0.5 meter. How much work does the person do in this action?(1 point)
    12·1 answer
  • Which statement about allele combinations is accurate?
    8·1 answer
  • A 60 kg hockey player skating at 20 m/s gets slammed with a force of 950 N. How long does it take him to stop completely?
    13·1 answer
  • Assume the truck is going at v0 = 25 m/s, and you're 20 m behind the truck. You decide to accelerate at a = 1.0 m/s2 to pass the
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!