You put a thermometer in a pot of hot water and record the reading. What temperature have you recorded? (i) The temperature of the water; (ii) the temperature of the thermometer; (iii) an equal average of the temperatures of the water and thermometer; (iv) a weighted average of the temperatures of the water and thermometer, with more emphasis on the temperature of the water; (v) a weighted average of the water and thermometer, with more emphasis on the temperature of the thermometer.
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- 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 Standardsarrow_forwardAccording to the National Coffee Association, the best serving temperature of coffee is between 82°C to 88°C. One day you decided to take a coffee break at Falcon Garden and it was served with a temperature of 87°C and after 5 minutes you found out that the temperature of the coffee was decrease to 73°C. If the temperature at Falcon Garden is 20°C what is the temperature of your coffee after 18 minutes. (unit not needed)arrow_forwardThe following heat transfer formula quantifies the radiation emitted from the Sun: P = eoA(T4 – T?) Equation 5 where: P= radiated power (Watts) e = emissivity (=1 for ideal radiator; unitless) o = Stefan-Boltzmann constant = 5.67x10-8 W/m2-K+ A = radiating area (m²) T= temperature of radiator (Kelvin) Tc = temperature of surroundings (Kelvin) Q3 Using the following values, together with equation 5, calculate the power emitted by the Sun. sun's surface temperature = 5780 K temperature of the environment that the Sun is located in = 4 K emissivity of the Sun = 1 radius of the Sun = 695,700,000 m Stephen-Boltzmann constant o = 5.67 x 10-8 W/m2-K4 Show your work below-you may use the equation editor or insert a picture of your handwritten work.arrow_forward
- Asaparrow_forwardA window has dimensions of 1.65 m by 2.4 m and is made of glass 5.25 mm thick. On a winter day, the outside temperature is 22° C while the inside temperature is a comfortable at 17° C. (k of glass =0.085W/m.K) (1.5+1.5+2 = 5marks) Calculate the following: a) the area of the window in square metres b) the temperature gradient (AT/Ax)in kelvin/metre c) the rate of heat lost through the window by conduction in wattsarrow_forwardYou are trying to measure the outside temperature at a particular time. If you use three thermometers and place all three in direct sunlight, the sunlight is likely to cause your measurements to suffer from what kind of error? Group of answer choices A) Your measurements will suffer from systematic errors because the sunlight affects all measurements in the same way by making them too high by the same amount. B) Your measurements will suffer from a decrease in precision because the thermometer only uses whole numbers. C) Your measurements will suffer from random errors because they will be expressed as a percentage. D) Your measurements will suffer from random errors because of the randomness of cloud movements. Sometimes the clouds block sunlight. E) Your measurements will suffer from systematic errors because they will never quite match the true temperature. F) Your measurements will suffer from a decrease in precision because at the same time of day tomorrow the amount…arrow_forward
- A thermometer is taken from a room where the temperature is 18°C to the outdoors, where the temperature is -1°C. After one minute the thermometer reads 11°C (a) What will the reading on the thermometer be after 2 more minutes? (b) When will the thermometer read 0°C? minutes after it was taken to the outdoors.arrow_forwardThe amount of radiant energy emitted by a surface is given by q = ɛ0 AT+ where q represents the rate of thermal energy (per unit time) emitted by the surface in watts; e = the emissivity of the surface 0<ɛ<1 and is unitless o = Stefan-Boltzman constant (o = 5.67×10% ) A represents the area of the surface in m² Ty = surface temperature of the object expressed in kelvin What are the appropriate units for o if the equation is to be homogeneous in units?arrow_forwardA patient has an illness that typically lasts about 24 hours. The temperature, T, in degrees Fahrenheit, of the patient t hours after the illness begins is given by: T(t) = -0.012t² +0.3t +98.7. Use your calculator to graph the function and answer the following questions. Round all answers to 1 decimal place. When does the patient's temperature reach it maximum value? Answer: After hours What is the patient's maximum temperature during the illness? Answer:arrow_forward
- A 16 kg stainless steel ball is dropped into a payment from the height of 104 m. if half of the heat generated goes into the warming the ball find the temperature increase of the ball (in SI units the specific heat capacity of the stainless steel ball is 461 j/kg degrees Celsius.) A 16 kg stainless steel ball is dropped onto a pavement from the height of 104 m. is the answer to 20 the answer for a ball of any mass?arrow_forwardThe formula for converting Celsius temperature, C, to Fahrenheit temperature, F, is F=95C+32. If Fahrenheit temperature ranges from 50° to 104°, inclusive, what is the range for Celsius temperature? Use interval notation to express this range.arrow_forwardThe temperature C of a fresh cup of coffee t minutes after it is poured is given by C = 125e−0.03t + 67 degrees Fahrenheit. (a) Make a graph of C versus t. I answered ( a) correctly (b) The coffee is cool enough to drink when its temperature is 145 degrees. When will the coffee be cool enough to drink? (Round your answer to two decimal places.) min(c) What is the temperature of the coffee in the pot? (Note: We are assuming that the coffee pot is being kept hot and is the same temperature as the cup of coffee when it was poured. Round your answer to the nearest degree.) °F(d) What is the temperature in the room where you are drinking the coffee? (Hint: If the coffee is left to cool a long time, it will reach room temperature. Round your answer to the nearest degree.) °Farrow_forward
- University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice UniversityPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning