The graph represents the motion of a car on a straight highway.

 

 

What distance did the car travel from 4 s to 8 s?

 A box is at rest on a floor. Then a student drags the box across the floor. The diagram shows the horizontal forces acting on the box as it is being dragged.

 

 

Based on Newton’s second law, what is the velocity of the box 1 s after the student starts dragging it?

A hiker walked on a path.

 

Part A: The graph shows the position of the hiker versus time. The hiker started at position S. Four additional points on the graph are labeled H, I, J, and K.

 

 

At which point was the hiker farthest from the starting position?

Question #25 Part B: The graph shows the hiker’s position during four time intervals,

 

 

During which time interval was the speed of the hiker the greatest?

A type of radioactive decay is represented by the diagram.

 

 

Which of the following best describes what happens to the original nucleus during the decay process?

The diagram shows two wave pulses moving toward each other.

 

 

Which diagram shows the shape of the wave when the pulses directly overlap?

The table provides information about four pairs of objects.

 

 

Which pair of objects has the greatest gravitational attraction?

The graph shows the speed of sound at different temperatures in three media: X, Y, and Z.

 

 

The three media are air (a gas), silver (a solid), and water (a liquid). Based on the graph, each medium is represented by which letter?

Two steel spheres, A and B, each have a mass of 0.54 kg. Each sphere is moving to the right at a different speed, as shown.

 

 

Sphere A collides with sphere B. After the collision, sphere A slows, but both spheres continue to move to the right. Which of the following diagrams shows the velocity of each sphere after the collision?

The next four questions (#33 through #36) focus on thermal energy transfer. Read the information below and use it to answer the selected-response questions and constructed-response question that follow.

 

A student conducted two investigations to learn about thermal energy transfer.

 

Investigation 1

 

During investigation 1, the student used two insulated containers, container 1 and container 2. The student added 500 g of 95ºC water to container 1 and 500 g of 5ºC water to container 2. The student closed the containers and placed a thermometer in each. The student then placed one end of a U-shaped piece of metal into the water in container 1 and the other end into the water in container 2, as shown.

 

 

Next, the student measured the water temperature in each container over time. The data are shown in Table 1.

 

 

Investigation 2

 

The student investigated how the specific heat capacity of a substance affects the temperature change of the substance. During investigation 2, the student heated four liquids, W, X, Y, and Z. Each liquid had a mass of 200 g and was heated for the

same amount of time using the same heat source. The specific heat capacities of the four liquids are shown in Table 2.

 

 

The data from investigation 1 are represented in the graph. Four points on the graph are labeled W, X, Y, and Z.

 

 

At which point did container 1 and container 2 first reach thermal equilibrium?

Question #36 Part B: The student repeated investigation 2 with 400 g of liquid W instead of 200 g. The student used the same heat source and heated liquid W for the same amount of time. How were the results of the investigation different when 400 g of liquid W were used instead of 200 g?

Open Response Question #37 is provided at the end of the page.

 

The diagram shows a simple circuit. A location near the circuit is labeled X.

 

 

Which of the following explains whether there is a magnetic field at point X?

Elephants use sound for communication. The table shows the average frequencies of sound waves produced by adult elephants and their young.

 

 

What additional information is needed to determine the wavelengths of the sounds produced by the elephants?

The circuit shown has a current of 0.6 A.

 

 

What is the voltage of the battery?

A. Identify whether the average molecular motion of the water molecules in container 1 and container 2 increased, decreased, or remained the same during the first 100 s of investigation 1. Be sure to label your answer for each container.

B. Component K is replaced with a piece of wire. Calculate the total resistance of the circuit. Show your calculations and include units in your answer.