which of the following situations represents work 7182334

ATI TEAS 7

ati teas 7 science

1. Which of the following situations represents work being done on an object?

A. Pushing against a wall without moving it
B. Carrying a heavy object without lifting it
C. Lifting a box to place it on a shelf
D. Holding a book stationary in your hand

Correct answer: C

Rationale: Work is defined as the product of the force applied to an object and the distance over which the force is applied. In the situation of lifting a box to place it on a shelf, work is being done on the object. This is because lifting the box involves applying a force over a distance (the height of the shelf). The force applied to lift the box results in work being done on the object by raising it against the force of gravity. Choices A, B, and D do not involve work being done on the object as they either do not involve movement against a force (A, D) or do not cover distance against a force (B).

2. Which of the following best describes the function of synergists?

A. They assist primary movers in completing specific movements
B. They stabilize the point of origin and provide extra pull near the insertion
C. They help prevent unwanted movement at a joint
D. All of the above

Correct answer: D

Rationale: Synergists play multiple roles in muscle function. They assist primary movers in completing specific movements by working together with them. Additionally, synergists help stabilize the point of origin and provide extra pull near the insertion, contributing to the efficiency of movement. Furthermore, they also help prevent unwanted movement at a joint by ensuring that the intended motion is executed smoothly. Therefore, all the statements in the answer choices accurately describe the functions of synergists, making 'All of the above' the most comprehensive and precise description of their role.

3. How did Araminta Ross come to be known as Harriet Tubman?

A. She changed her name to her husband's last name and her first name to her mother's name.
B. She was named after the plantation owner's wife.
C. She changed her name because she was wanted as an Underground Railroad runner.
D. She changed her name to remain anonymous as a Civil War spy.

Correct answer: A

Rationale: Araminta Ross came to be known as Harriet Tubman after marrying a free black man named John Tubman. She took her husband's last name 'Tubman' and changed her first name to 'Harriet,' which was her mother's name. This change of name was a personal choice after her marriage and not because she was named after the plantation owner's wife (B), wanted as an Underground Railroad runner (C), or to remain anonymous as a Civil War spy (D). Therefore, the correct answer is A.

4. If a train travels 60 miles per hour for 2 hours, how far does the train travel?

A. 60 miles
B. 100 miles
C. 120 miles
D. 200 miles

Correct answer: C

Rationale: To find the distance traveled by the train, we use the formula Distance = Speed x Time. Given that the train travels at 60 miles per hour for 2 hours, the calculation would be 60 miles/hour x 2 hours = 120 miles. Therefore, the correct answer is 120 miles. Choice A (60 miles) is incorrect because it only represents the speed of the train, not the total distance traveled. Choice B (100 miles) is incorrect as it does not account for the full 2 hours of travel. Choice D (200 miles) is incorrect as it overestimates the distance by multiplying the speed by the time incorrectly.

5. While researching Chomsky's many theories and arguments, Teddy became interested in post-World War II anarchism. Which section of the library is the most likely to contain the relevant books?

A. 000
B. 200
C. 300
D. 900

Correct answer: C

Rationale: Since anarchism is a social science theory, it falls under the classification of social sciences in the Dewey Decimal System. Section 300 covers social sciences, making it the most suitable section for finding books related to post-World War II anarchism. Choice A (000 - Computer science), Choice B (200 - Religion), and Choice D (900 - History) are incorrect because they do not directly relate to social sciences where anarchism would be classified.