Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 3, Problem 6Q
To determine
The method adopted by Archimedes to detect the presence of silver in the gold grown.
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The element neptunium has a density of 19.6 g/ml. What is the radius of a sphere of this material if it has a mass of 70kg? V=4/3pi r^3
A = (6.00i – 8.00j)
units,
37. QC (a)
(-8.00i + 3.00j) units, and C= (26.0i + 19.0j) units,
determine a and b such that aA + bB + Ć = 0. (b) A stu-
dent has learned that a single equation cannot be solved to
determine values for more than one unknown in it. How
you explain to him that both a and b can be deter-
mined from the single equation used in part (a)?
Taking
would
Our classroom was kept at 25.0°C during your experiment, so v is predicted to be
346 m/s. One group of students measured V=343 m/s. What is the percentage
error of their measurement? Don't enter the 1% sign in your answer, just the
number in front of the "%" sign.
Your Answer:
Answer
Chapter 3 Solutions
Physics Laboratory Experiments
Ch. 3 - Prob. 1ASACh. 3 - Does a laboratory balance measure weight or mass?...Ch. 3 - What is the function of the vernier scale on the...Ch. 3 - Distinguish between positive and negative zero...Ch. 3 - What is the purpose of the ratchet mechanism on a...Ch. 3 - Explain how readings from 0.00 through 1.00 mm are...Ch. 3 - Prob. 7ASACh. 3 - Prob. 8ASACh. 3 - Explain the probable source of error(s) in the...Ch. 3 - Prob. 2Q
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- One mole of silicon (6x1023 atoms) has a mass of 28 grams, as shown in the periodic table on the inside front cover of the textbook. The density of silicon is 2.4 grams/cm³. What is the approximate diameter of a silicon atom (length of a bond) in a solid block of the material? Make the simplifying assumption that the atoms are arranged in a "cubic" array, as shown in the figure. Remember to convert to SI units. d =arrow_forwardA U.S. 1-cent coin (a penny) has a diameter of 19 mmmm and a thickness of 1.5 mmmm. Assume the coin is made of pure copper, whose density and approximate market price are 8.9 g/cm3g/cm3 and $2.40 per pound, respectively. Calculate the value of the copper in the coin, assuming its thickness is uniform. Express your answer in dollars to two decimal places.arrow_forwardA cylinder 20cm long and 6cm in radius is made of two different metals bonded end to end to make a single bar. The densities are 4.1 g/cm3 and 6.4 g/cm3. What is the lighter density part of the bar needed if the total mass is 11094 g? Answer in units of cmarrow_forward
- Calculate the average density of the following astronomical body: Jupiter. Where does the value fit among those listed in the table below? Look up the density of a typical rock, such as granite in another source and compare the density of Jupiter to it. Table: Densities of Some Common Substances at Standard Temperature (0°C) and Pressure (Atmospheric) Substance ρ (kg/m3) Substance ρ (kg/m3) Air 1.29 Ice 0.917 ✕ 103 Aluminum 2.70 ✕ 103 Iron 7.86 ✕ 103 Benzene 0.879 ✕ 103 Lead 11.3 ✕ 103 Copper 8.92 ✕ 103 Mercury 13.6 ✕ 103 Ethyl Alcohol 0.806 ✕ 103 Oak 0.710 ✕ 103 Fresh Water 1.00 ✕ 103 Oxygen gas 1.43 Glycerin 1.26 ✕ 103 Pine 0.373 ✕ 103 Gold 19.3 ✕ 103 Platinum 21.4 ✕ 103 Helium gas 1.79 ✕ 10−1 Sea Water 1.03 ✕ 103 Hydrogen gas 8.99 ✕ 10−2 Silver 10.5 ✕ 103arrow_forwardThe British gold sovereign coin is an alloy of gold and copper having a total mass of 7.988 g, and is 22-karat gold. (a) Find the mass of gold in the sovereign in kilograms using the fact that the number of karats = 24 ✕ (mass of gold)/(total mass). ?kg(b) Calculate the volumes of gold and copper, respectively, used to manufacture the coin. volume of gold ? m3 volume of copper ?m3 (c) Calculate the density of the British sovereign coin. ?kg/m3arrow_forwardA scientist is working with 19 meters of gold wire. How long is the wire in millimeters? Be sure to include the correct unit in your answer.arrow_forward
- One mole of Gold (Au) atom has a mass of 197 g. We know that the density of gold is 19.30 g/cm3 in room temperature. Using those numbers, answer the following questions: a) What is the mass of a single gold atom in kg? b) Assume that gold atoms sit in a perfect cubic crystal structure. Estimate the distance between two gold atoms in meters. c) If we have a gold cube of 6 cm on each side, how many atoms can we fit along the edge of each side of the cube? d) What would be the mass, in kilograms, of the gold cube we discussed in part (c) (measuring 6 cm on each side)?arrow_forward(a) Taking A = (6.00 î – 8.00 j) units, B = (-8,00 Î + 3.00 j) units, and C = (26.0 î + 19.0 ĵ) units, determine a and b such that a à + b B + T = 0. (b) A student has learned that a single equation cannot be Figure P22 solved to determine values for more than one unknown in it. How would you explain to him that both a and b can be determined from the single equation used in part (a)?arrow_forwardIn the fall of 2002, scientists at Los Alamos National Laboratory determined that the critical mass of neptunium-237 is about 60 kg. The critical mass of a fissionable material is the minimum amount that must be brought together to start a nuclear chain reaction. Neptunium-237 has a density of 19.5 g/cm3. What would be the radius of a sphere of this material that has a critical mass?arrow_forward
- When a particular substance crystallizes, it forms a body-centered cubic unit cell. It has a molecular weight of 100.11 g/mole. The unit cell edge length is 341 pm. Calculate the density of this substance in g/cm3 .arrow_forwardA rectangular block of copper alloy has a mass of 1896 g. The dimensions of the block are 8.4 cm by 5.5 cm by 4.6 cm. From this data, what is the density of copper? 9386 kg/m³ O 0.112 kg/m³ 402938 kg/m3 2650 kg/m3 8922 kg/m³ 5498 kg/m³arrow_forward2.26. The Prandtl number, Npr, is a dimensionless group important in heat-transfer calculations. It is defined as Cpulk, where C, is the heat capacity of a fluid, u is the fluid viscosity, and k is the thermal conductivity. For a particular fluid, C, = 0.583 J/(g-°C), k = 0.286 W/(m-°C), and u = 1936 lbm/(ft-h). Estimate the %3D value of Npr without using a calculator (remember, it is dimensionless), showing your calculations; then determine it with a calculator.arrow_forward
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