Chapter 1: Q. 31 (page 30)
Estimate the height of a telephone pole. Give your answer in both feet and meters. Briefly describe how you arrived at this estimate
Short Answer
The average height of the telephone pole is12 meters or 36 feets
Chapter 1: Q. 31 (page 30)
Estimate the height of a telephone pole. Give your answer in both feet and meters. Briefly describe how you arrived at this estimate
The average height of the telephone pole is12 meters or 36 feets
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Get started for freeFIGURE EX1.18 shows the motion diagram of a drag racer. The camera took one frame every 2 s.
a. Measure the x-value of the racer at each dot. List your data in a table similar to Table 1.1, showing each position and the time at which it occurred.
b. Make a position-versus-time graph for the drag racer. Because you have data only at certain instants, your graph should consist of dots that are not connected.
The quantity called mass density is the mass per unit volume of a substance. What are the mass densities in SI units of the following objects?
a. A 215 cm3 solid with a mass of 0.0179 kg.
b. 95 cm3 of a liquid with a mass of 77 g
Using the approximate conversion factors in Table 1.5, convert the following SI units to English units without using your calculator.
a. 30 cm b. 25 m/s
c. 5 km d. 0.5 cm
Convert the following to SI units:
a. b.
c. role="math" localid="1648656441116" d. role="math" localid="1648656467276"
A sound wave is described by , where y is in mand t is in s.
a. In what direction is this wave traveling?
b. Along which axis is the air oscillating?
c. What are the wavelength, the wave speed, and the period of
oscillation?
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