Answer the following by filling the blank: During a bout with the flu, an 80-kg person ran a fever of 39 oC. Consider that the specific heat of any human body is 3470 J/kg K, how much energy does the body need to burn to reach the fever temperature? The answer (in fundamental SI unit) is ___________ (type the numeric value only, dont use scientific notation)

Answer the following by filling the blank: During a bout with the flu, an 80-kg person ran a fever of 39 oC. Consider that the specific heat of any human body is 3470 J/kg K, how much energy does the body need to burn to reach the fever temperature? The answer (in fundamental SI unit) is ___________ (type the numeric value only, dont use scientific notation)

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter1: Units And Measurement

Section: Chapter Questions

Problem 75P: (a) A person’s blood pressure is measured to be 1202mmHg . What is its percent uncertainty? (b)...

See similar textbooks

Similar questions

For each of the following scenarios, refer to Figure 1.4 and Table 1.2 to determine which metric prefix on the meter is most appropriate for each of the following scenarios. (a) You want to tabulate the mean distance from the Sun for each planet in the solar system. (b) You want to compare the sizes of some common viruses to design a mechanical filter capable of blocking the pathogenic ones. (c) You want to list the diameters of all the elements on the periodic table. (d) You want to list the distances to all the stars that have now received any radio broadcasts sent from Earth 10 years ago. 1.2 Units and Standards
(a) A person’s blood pressure is measured to be 1202mmHg . What is its percent uncertainty? (b) Assuming the same percent uncertainty, what is the uncertainty in a blood pressure measurement of 80 mm He?
This was wrong. Can you solve this again with these numbers? What is the root mean square velocity, vrms, for Hydrogen molecules (H2) at 20oC? Hint: How many amu does an H2 molecule contain. 1 amu = 1.67 x 10-27 kg Boltzman's Constant, k = 1.38 x 10-23 J/K Give your answer in m/s to 4 significant figures (NO DECIMALS)
A hot tub with a surface area of 28 ft2 is filled with water to a depth of 29 in . Hint: volume is calculated as area × height (A × h). A) What is the volume of water in the tub, in liters? Express your answer to two significant figures and include the appropriate units. B) How many kilojoules are needed to heat the water from 59∘F to 103 ∘F? Express your answer to two significant figures and include the appropriate units. C) If the hot-tub heater provides 5900 kJ/min, how long, in hours, will it take to heat the water in the hot tub from 59∘F to 103∘F? Express your answer to two significant figures and include the appropriate units.
2.26. 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.
In section 1.2 one reads “The composition of the gas sendout will consist of natural gas, liquefied natural gas, propane-air gas, and synthetic gas in varying proportions depending upon the gas supply situation at any given time. The normal range of heating value will be from 1000 to 1200 Btu per cubic foot (cu. ft.) of gas”. Use standard enthalpies. Assume that gas supplied by BGE is methane. Calculate heating value.
The Colburn equation for heat transfer is: where Cp is heat capacity, Btu Ib °F; µ is viscosity, Ib h* ft; k is thermal conductivity, Btu h ft? (°F ft); D is pipe diameter, ft; andG is mass velocity per unit area, Ib h ft?. h 2/3 0.023 k DG 0.2 The Colburn equation is dimensionally consistent. What are the units and dimensions of the heat transfer coefficient, h? Please write here the complete process that you used to determine the correct units and dimensions of h. Please note that the problem is asking for two separate items, units and dimensions are not the same. In this problem, your results will be given in the
8.36 grams of a mystery substance of food with a molar mass of 149.36 g/mol is burned in a bomb calorimeter. The water in the bomb calorimeter absorbs 105,961 Joules from the burning of the substance. Calculate the heat of combustion of the mystery substance in kJ/mol. (Please input your answer as a negative number.) (DO NOT PUT UNITS IN YOUR ANSWER.) Assume that all of the heat lost by the substance is transferred to the water and no heat is lost to the surroundings.
A cylinder containing 246 cubic centimeter of gas at a pressure of 101 kPa when its temperature is 526 K. Given that its temperature is unchanged when the pressure was increased by a factor of 3.9, Determine the new volume of the gas (In cubic centimeter). Note: Your answer must be in cubic centimeter, however, do not include the unit, just enter the magnitude that corresponds to the final volume in cubic centimeter. Round your answer to 2 decimal points Round your answer to 2 decimal points Answer:
Problems A12 1-1. (a) List the SI units of length, mass, time, electric cur- rent, temperature, and amount of substance. Write the abbre- viation for each. Jund juod (b) Write the units and symbols for frequency, force, pres- and power. sure, energy, 1-2. Write the name and number represented by each abbre- viation. For example, for kW you should write kW = kilowatt = 10³ watts. (a) mW (b) pm (c) ΚΩ (d) μC (e) TJ (f) ns (g) fg (h) dpa 163. Express the following quantities with abbreviations for units and prefixes from Tables 1-1 through 1-3: (a) 10-¹3 joules0 + (1)0,HE (b) 4.317 28 x 10-8 coulombs (d) 10-10 meters (e) 2.1 x 10¹3 watts (f) 48.3 x 10-20 moles (c) 2.997 9 x 10¹4 hertz bns M2.01 1-4. Table 1-4 states that 1 horsepower = 745.700 watts. Consider a 100.0-horsepower engine. Express its power output in (a) watts; (b) joules per second; (c) calories per second; (d) calories per hour. 1-5 (a) Refer to Table 1-4 and calculate how many meters are in 1 inch. How many inches are in 1…
0.3 Suppose the average daily metabolic rate for certain types of animals can be expressed as a function of mass by r= 120.9m where m is the mass of the animal (in kilograms) and r is the metabolic rate (in kcal per day). " dm dr dt a. If the mass of an animal is changing at a rate of find dt b. Determine for a 100-kg animal that is gaining mass at a rate of 3 kg per day. dr dt ... dr dt " dm a. If the mass of an animal is changing at a rate of dt " find dr 기 dt
The quantity of energy Q transferred by heat conduction through an insulating pad in time interval Δt is described by Q/Δt = κAΔT/d, where κ is the thermal conductivity of the material, A is the face area of the pad (perpendicular to the direction of heat flow), ΔT is the difference in temperature across the pad, and d is the thickness of the pad. In one trial to test material as lining for sleeping bags, 86.0 J of heat is transferred through a 3.40-cm-thick pad when the temperature on one side is 37.0°C and on the other side is 2.00°C. In a trial of the same duration with the same temperatures, how much heat will be transferred when more of the material is added to form a pad with the same face area and total thickness 8.41 cm?