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
Marrrta [24]
3 years ago
6

In countries where there is very hot and very cold weather, should the gaps between the lengths of railway track be wider or nar

rower?
Physics
1 answer:
kipiarov [429]3 years ago
5 0
They should be bigger as if it is hot the tracks will expand as it is made of metal and then there is more room for it to expand or contract
You might be interested in
A lever is being used to move a heavy stone from a garden. The stone weighs 250 newtons. The board used as a lever is 6 meters l
DerKrebs [107]

Answer:

Force = 125 [N]

Explanation:

In the attached image we can see a sketch of the lever system.

And if we make a sum of moments at the point O equal to zero (0).

In the equation showed in the image, we can determinate the force that we need

7 0
3 years ago
Where does the name basketball come from?
umka21 [38]
Definitely ball and basket
7 0
3 years ago
A cube made Of an unknown material has a height of 9 symeters the mass of this cube is 3645 g. calculate the density of this cub
kherson [118]

Answer: 5 \frac{g}{cm^{3}}

Explanation:

The density \rho of a material is given by:

\rho=\frac{m}{V} (1)

Where:

m=3645 g is the mass of the cube

V is the volume of the cube

Now, the volume of a cube is equal to the length L of its edge to the power of 3:

V=L^{3} (2)

If we know L=9 cm, the volume of this cube is:

V=(9 cm)^{3}=729 cm^{3} (3)

Substituting (3) in (1):

\rho=\frac{3645 g}{729 cm^{3}} (4)

\rho=5 \frac{g}{cm^{3}} This is the density of the cube

8 0
3 years ago
What are the conditions under which electricity is conducted ​
dolphi86 [110]

There must be a conducting wire and electromotive force or free electrons

3 0
3 years ago
An airplane with constant speed 696 mph than another 40 minutes constant speed 804 mph what is distance it go?
sleet_krkn [62]

Answer:

536 miles

Explanation:

If the airplane is running at a speed of 804 miles per hour, and covers a distance, x in a particular number of mile. The distance in mile can be gotten they the application of direct formula. Multiplying the speed by the time it took, and thus

804 mph * 40

Remember the time is in minutes and not hours, so, you convert it to hours.

804 * 40/60 hours =

536 miles

6 0
3 years ago
Other questions:
  • You often hear people, particularly TV announcers, talk about a "high rate of speed." What do you think they mean? According to
    14·1 answer
  • Jonah finds a rusty nail outside. The nail is an example of _____.
    12·2 answers
  • In which scenario will the two objects have the greatest gravitational force
    13·2 answers
  • Which state Which states of matter have a set volume? Explain why this is, based on the animations you observed for the differen
    9·1 answer
  • Velocity of B rays ?<br>​
    5·2 answers
  • Answer the question based on this waveform.
    8·1 answer
  • Is momentum proportional or inversely proportional to mass?
    14·1 answer
  • You are heating an iron to iron the shirt you're going to wear to school tomorrow. Which of the following best describes the tra
    7·1 answer
  • A flywheel of diameter 1.2 m has a constant angular acceleration of 5.0 rad/s2. The tangential acceleration of a point on its ri
    11·1 answer
  • A 2.35-m-long wire having a mass of 0.100 kg is fixed at both ends. The tension in the wire is maintained at 22.0 N.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!