PhysicsLAB: MCAS 2005 Session 1

PhysicsLAB

MCAS Physics Exams
MCAS 2005 Session 1

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The illustration below shows a 2-ton elephant balancing on a tree stump.

Which of the following statements must be accurate?

A. The weight of the tree stump is greater than 2 tons.
B. A 4-ton force on the ground spreads out in all directions.
C. The tree stump is exerting a 2-ton force upward on the elephant.
D. The downward force on the ground under the tree stump is 4 tons.

Which of the following describes how a microwave oven heats food?

A. The oven’s interior reﬂects heat onto the food.
B. The oven’s interior, like a lens, focuses heat onto the food.
C. Water molecules in the food reﬂect energy from microwave radiation.
D. Water molecules in the food absorb the energy of microwave radiation.

A recycling plant manager needs to melt 1500 kg of scrap copper to sell to a wire manufacturer. The copper is at 15°C and its melting point is 1083°C. The copper has a speciﬁc heat of 385 J/kg • K. How much heat is required to raise the temperature of the copper to its melting point?

A. 6.2 x 10⁸ JB. 6.3 x 10⁸ JC. 7.7 x 10⁸ JD. 7.9 x 10⁸ J

Each of the following illustrations shows the movement of a 1 kg object. Which of these is an example of simple harmonic motion?

Which of the following describes an object that must have a net negative charge?

A. It contains more molecules than atoms.
B. It contains more electrons than protons.
C. It is carrying an electric current.
D. It is made of metal.

A 1500 kg car increases its speed by 2 m/s for each second of travel. What is the net force acting on the car?

A. 750 NB. 1500 NC. 3000 ND. 6000 N

The illustration below represents an experiment in which a hot object is added to a container of water at room temperature.

The water is continuously stirred while the hot object is immersed in it. Which of the following graphs best shows the temperature changes that follow?

An organ pipe produces a musical note with a wavelength of 2.72 m. What is the frequency of this note if the speed of sound is 348 m/s?

A. 85.7 HzB. 128 HzC. 260 HzD. 466 Hz

Students in a physics lab are studying the circuit shown in the diagram below.

Which of the following options will double the current through the ammeter?

A. replacing the battery with a 5 V battery
B. adding a 30-Ω resistor in parallel with R
C. replacing the resistor with a 30-Ω resistor
D. adding a second 60-Ω resistor in series with R

Two boxes, A and B, both contain the same number of nitrogen gas molecules. The gas molecules in box A have twice the average speed of the molecules in box B. Which of the following best describes the nitrogen gas in box A?

A. The nitrogen gas in box A has a greater mass than the nitrogen gas in box B.
B. The nitrogen gas in box A has a greater density than the nitrogen gas in box B.
C. The nitrogen gas in box A has a greater temperature than the nitrogen gas in box B.
D. The nitrogen gas in box A has a greater speciﬁc gravity than the nitrogen gas in box B.

Open-Response Questions

BE SURE TO ANSWER AND LABEL ALL PARTS OF THE QUESTION.
Show all your work (diagrams, tables, or computations) in your Student Answer Booklet.
If you do the work in your head, explain in writing how you did the work.

Refer to the following information for the next four questions.

The figure below shows a tennis ball bouncing from point 1 to point 5. The tennis ball bounces up from point 1 as shown in the figure to a maximum height labeled as point 2. The ball then bounces a few times. Neglect any horizontal motion.

a. Describe the kinetic and gravitational potential energy changes of the ball that occur between points 1 and 2.

b. Describe the kinetic and gravitational potential energy changes of the ball that occur between points 2 and 3.

c. Compare the kinetic energy of the ball at points 3 and 4.

d. The tennis ball has less energy at point 5 than it had at point 3. Explain what happened to the energy the ball had at point 3.

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- MCAS 2004 Session 1

- MCAS 2004 Session 2

- MCAS 2005 Session 2

- MCAS 2006 Session 1

- MCAS 2006 Session 2

- MCAS 2007 Session 1

- MCAS 2007 Session 2

- MCAS 2008 Session 1

- MCAS 2008 Session 2

- MCAS 2009 Session 1

- MCAS 2009 Session 2

- MCAS 2010 Session 1

- MCAS 2010 Session 2

- MCAS 2011 Session 1

- MCAS 2011 Session 2

- MCAS 2012 Session 1

- MCAS 2012 Session 2

- MCAS 2013 Session 1

- MCAS 2013 Session 2

- MCAS 2014 Session 1

- MCAS 2014 Session 2

- MCAS 2015 Session 1

- MCAS 2015 Session 2

- MCAS 2016 Session 1

- MCAS 2016 Session 2

- MCAS 2017 Session 1

- MCAS 2017 Session 2

- MCAS 2018 Session 1

- MCAS 2018 Session 2

- MCAS 2019 Session 1

- MCAS 2019 Session 2

MCAS Physics Exams
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