Which term means the distance between two bridge supports?

Physics

1 answer:

Ad libitum [116K]3 years ago

5 0

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.

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Which statement describes steps involved in the production of hydroelectric power?

viktelen [127]

Answer:

Answer is D.......Falling water turns a turbine that helps generate electricity.

Explanation:

Hydropower plants capture the energy of falling water to generate electricity. A turbine converts the kinetic energy of falling water into mechanical energy. Then a generator converts the mechanical energy from the turbine into electrical energy.

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3 years ago

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An igneous intrusion whose boundaries lie parallel to the layering in the surrounding country rock is considered to be:

ikadub [295]

...a concordant intrusion. In geology, "concordant" means the same as "sill" -- or, an intrusion that has gotten in between older layers of rock (or even beds of volcanic lava). An intrusion with boundaries parallel to layering in surrounding rocks suggests this, meaning it is considered to be a concordant intrusion.

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3 years ago

After an avalanche, a huge block of stone slid down a mountain and landed in the middle of a road. People in the nearby town had

jeka94

Answer:

Option (C)

Explanation:

From Newton's law of inertia, an object at rest tends to be at rest until there is an external force applied to it.

In the given question, the rock block that fell on the road due to the avalanche contains high mass and high inertia. Due to which the block was not able to move aside. The amount of energy required to push the block aside should be more than the mass of the block. So the block has high inertia value and it will need more force than its inertia value in order to move the block of rock towards the side of the road.

Thus, the correct answer is option (C).

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3 years ago

Which of the following materials is able to absorb large amounts of energy without changing temperature very much? air concrete

Alinara [238K]

At normal temperature, specific heat of air = 1.006 concrete =0.96 water =4.187 (all are in KJ/KgK) soil = 0.80 So, from Q=mcDeltaT higher the specific heat lower the change in temperature for same quantity of heat supplied. Therefore, water is the answer.

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Question 2 (1 point)

Leviafan [203]

The car takes 10.8 seconds to reach a velocity of 42.1 m/s

Explanation:

The motion of the car is at constant acceleration, so we can use the following suvat equation:

$v=u+at$