PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!! 80 POINTS!!!!!!!!!!!!

Physics

2 answers:

Alona [7]2 years ago

8 0

Answer: clay

Explanation:

Florida is mainly influences by Spanish culture, so building with clay and wood would make sense, knowing that that is how pueblas are built.

otez555 [7]2 years ago

3 0

Answer:

Explanation:

In the region I live, the climate is well divided. We have heat, rainy and cold season. However, I live in Brazil, and this country has a wide climate range, from intense cold to intense heat. Given this, there is a large diversity of materials used for housing construction, construction. In the city I live in, the houses, buildings, buildings in general are built with bricks as a base. However, in colder regions, such as southern Brazil, a lot of wood is used because it works as a type of heating.

Here we don't have hurricanes and tornados, and for this reason we needn't to build with materials resistant to these natural phenomena. But, as I wrote before, it depends on what region you live here in Brazil.

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Why is it important to know the direction of the force applied to a moving object and the direction in which the object is movin

erastova [34]

Answer

(C).

When there is an angle between the two directions, the cosine of the angle must be considered.

Step by step Solution

The work done by a force is defined as the product of the force and the distance traveled in the direction of motion.

The first answer "Only the component of the force perpendicular to the motion is used to calculate the work" is wrong because, the force perpendicular to motion does no work.

The second choice "If the force acts in the same direction as the motion, then no work is done" is wrong because the work in the direction of the force is $W=F\times d$ .

Fourth answer "A force at a right angle to the motion requires the use of the sine of the angle" is wrong because the $sin(90)=0$ meaning that there is no work done in the direction perpendicular to the motion.

The third answer" When there is an angle between the two directions, the cosine of the angle must be considered." is correct because the work is calculated using the force in the direction of the motion. The magnitude of this force is $F\times d\times \cos(\theta).$