The best answer is b - span.
A span is the distance between two bridge supports The supports may be towers, columns, or even the wall of a canyon.
There are many kinds of bridges but they all fall into three types namely beam, arch and suspension. The major difference between these three kinds of bridges is the distance that each can cross in a single span.
For example, a modern beam bridge is likely to span a distance of 200 feet, a modern arch can span 800 or 1000feet, and a modern suspension bridge can span up to 7000ft.
Answer:
I know that 2 is called a foul I dont know about 1 though
The answer is 1 the first one is the only one that makes sense
Answer:
A. The box experiences more friction on the carpeted floor
Explanation:
Friction is the force that opposes the motion of an object when it slides along a surface. The magnitude of the friction is given by
where m is the mass of the object, g is the acceleration due to gravity, and 
is the coefficient of friction, which depends on the type of material of the surface: the larger this coefficient, the stronger the friction, the more difficult is to push the box along the surface. Generally, a smooth surface has a lower coefficient of friction, while a rough surface has a larger coefficient of friction.
In this case, Ethan find it easier to push the box on the marble floor, because marble is smoother than the carpet and so friction is weaker, while for the carpeted floor the coefficient of friction is larger and so the friction is stronger, making it more difficult to push the box.
Answer:
A. To find increase in internal energy
We use
CV= f/2* R
=20.77J/molK
So change in internal energy is
nCvdt
So substituting
= 2 x 20.77x 60K
= 2493J
B.
We know that molar specific heat increase by R/2
So CV= (f/2+1)R
Which is 29.1J/milk
So
Increase in internal energy will be
nCvdt
= 2* 29.1*60
= 3490.2J
C. the translational energy is 3/2R
And the total molar specific heat capacity is 7/2R
So the fraction of energy in b due to K.E will be
3/7 * 3490.2
=1495.8J
