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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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express a heart rate of 120 beats per minute in terms of Hertz (1 Hz = 1 beat per
second)
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- If velocity =−12i + 21.5j m/s, how fast is it moving? (Express the answer to two significant figures).arrow_forwardWhich of the following calculations have the correct number of significant figures in the final result? 2.2 ст + 2.00 ст — 4.20 ст O 12.34 g 3.94 cm³ 3.132 cm3 V 2.0 cm - 1 cm = 1 cm V 11.32 cm x 6.31 cm x 6.762 cm = 4.83 × 10² cm³ V 10.32 cm × 6.31 cm × 6.762 cm = 4.40 × 10² cm³ V 1.0 x 10'g 0.27 cm 37 cmarrow_forwardIt's showing that b is not correct. Thank you for your help with this practice problem.arrow_forward
- After conducting the signal speed experiment a student has recorded the following data. L₂ (m) 1.5 3 4.5 8 15 30 dt (ns) 6.50 13.72 21.02 38.10 72.20 145.42 L2 is the length of the longer cable in meters and dt is the measured time delay in nanoseconds. The student neglected to record L₁, the length of the shorter cable. After speaking with their instructor, they learn all is not lost. They know the speed of the signal can be calculated based on the distance traveled divided by the time. However, the recorded times measure how much longer the signal had to travel in L2 compared to L₁. A little bit of thought convinces them (correctly) thatarrow_forwardThe rate of change of altitude in cm/s of a bird is given by a′(t)=650ln(t+3). What is the total change in altitude between t=3 and t=7? Round your answer to the nearest whole number and do not include units.arrow_forwardA stone is tossed into the air from ground level with an initial velocity of 30 m/s. Its height at time t is h(t) : 30t – 4.9t2 m. Compute the stone's average velocity ū in m/s over the time intervals [2, 2.01], [2,2.001], [2,2.0001] and [1.9999, 2], [1.999, 2], [1.99, 2]. (Use decimal notation. Give your answers to three decimal places.) Ū12,2.01] = m/s Ü12,2.001] = m/s U12,2.0001] = m/sarrow_forward
- If during strenuous exercise your heart rate is 146 beats per minute, determine the following. (a) the frequency of your heartbeat(b) the period of your heartbeatarrow_forwardItem 12 (Figure 1)A neutral conducting sphere contains a spherical cavity. A point charge q is placed at the center of the cavity. Part A What is the total surface charge dint on the interior surface of the conductor? ► View Available Hint(s) VE ΑΣΦ gint = Submit ?arrow_forwardWhat was the error in the following measurements? Mass (kg) Volume(m^3) Density (kg/m^3) 1.16 0.001 1160 2.46 0.0023 1069.565217 5.16 0.005 1032 10.16 0.01 1016 13.66 0.0135 1011.851852 There was no error in measurement There was a random error in the measurement of volume. The mass was measured with a systematic error Human errorarrow_forward
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