In a container of negligible mass, 0.200 kg of ice at an initial temperature of -40.0° C is mixed with a mass m of water that has an initial temperature of 80.0 °C. No heat is lost to the surroundings. If the final temperature of the system is 28.0° C, what is the mass m of the water that was initially at 80.0° C?
> At January 1, 2017, Langley Company’s outstanding shares included the following. 280,000 shares of $50 par value, 7% cumulative preferred stock 900,000 shares of $1 par value common stock Net income for 2017 was $2,530,000. No cash dividends were declare
> On January 1, 2017, Lennon Industries had stock outstanding as follows. 6% Cumulative preferred stock, $100 par value, issued and outstanding 10,000 shares…………………………………………………………$1,000,000 Common stock, $10 par value, issued and outstanding 200,000 Share
> Presented below is information related to the purchases of common stock by Lilly Company during 2017. Instructions (Assume a zero balance for any Fair Value Adjustment account.) a. What entry would Lilly make at December 31, 2017, to record the inves
> Hagar Corporation has municipal bonds classified as a held-to-maturity at December 31, 2017. These bonds have a par value of $800,000, an amortized cost of $800,000, and a fair value of $720,000. The company believes that impairment accounting is now app
> Ace Company had 200,000 shares of common stock outstanding on December 31, 2018. During the year 2019, the company issued 8,000 shares on May 1 and retired 14,000 shares on October 31. For the year 2019, Ace Company reported net income of $249,690 after
> On January 1, 2018, Wilke Corp. had 480,000 shares of common stock outstanding. During 2018, it had the following transactions that affected the common stock account. February 1…………………………..Issued 120,000 shares March 1………………………Issued a 10% stock dividend
> Kenseth Company has the following securities in its portfolio on December 31, 2017. None of these investments are accounted for under the equity method. All of the securities were purchased in 2017. In 2018, Kenseth completed the following securities
> Tweedie Company issues 10,000 shares of restricted stock to its CFO, Mary Tokar, on January 1, 2017. The stock has a fair value of $500,000 on this date. The service period related to this restricted stock is 5 years. Vesting occurs if Tokar stays with t
> Derrick Company issues 4,000 shares of restricted stock to its CFO, Dane Yaping, on January 1, 2017. The stock has a fair value of $120,000 on this date. The service period related to this restricted stock is 4 years. Vesting occurs if Yaping stays with
> Stave Company invests $10,000,000 in 5% fixed rate corporate bonds on January 1, 2017. All the bonds are classified as available-for-sale and are purchased at par. At year-end, market interest rates have declined, and the fair value of the bonds is now $
> On January 1, 2016, Nichols Corporation granted 10,000 options to key executives. Each option allows the executive to purchase one share of Nichols’ $5 par value common stock at a price of $20 per share. The options were exercisable within a 2-year perio
> On January 1, 2018, Titania Inc. granted stock options to officers and key employees for the purchase of 20,000 shares of the company’s $10 par common stock at $25 per share. The options were exercisable within a 5-year period beginning January 1, 2020,
> On November 1, 2017, Columbo Company adopted a stock-option plan that granted options to key executives to purchase 30,000 shares of the company’s $10 par value common stock. The options were granted on January 2, 2018, and were exercisable 2 years after
> On May 1, 2017, Friendly Company issued 2,000 $1,000 bonds at 102. Each bond was issued with one detachable stock warrant. Shortly after issuance, the bonds were selling at 98, but the fair value of the warrants cannot be determined. Instructions a. Pr
> On September 1, 2017, Sands Company sold at 104 (plus accrued interest) 4,000 of its 9%, 10-year, $1,000 face value, nonconvertible bonds with detachable stock warrants. Each bond carried two detachable warrants. Each warrant was for one share of common
> On December 21, 2017, Bucky Katt Company provided you with the following information regarding its equity investments. During 2018, Colorado Co. stock was sold for $9,400. The fair value of the stock on December 31, 2018, was Clemson Corp. stockâ
> Taveras Enterprises provides the following information relative to its defined benefit pension plan. Balances or Values at December 31, 2017 Projected benefit obligation………………………………………………$2,737,000 Accumulated benefit obligation…………………………………………..1,980,0
> Kenseth Corp. has the following beginning-of-the-year present values for its projected benefit obligation and market-related values for its pension plan assets. The average remaining service life per employee in 2016 and 2017 is 10 years and in 2018 an
> Gingrich Importers provides the following pension plan information. Fair value of pension plan assets, January 1, 2017……………..$2,400,000 Fair value of pension plan assets, December 31, 2017…………..2,725,000 Contributions to the plan in 2017…………………………………………
> Andrews Company has five employees participating in its defined benefit pension plan. Expected years of future service for these employees at the beginning of 2017 are as follows. Future Employee………………..Years of Se
> On March 1, 2017, Parnevik Company sold goods to Goosen Inc. for $660,000 in exchange for a 5-year, zerointerest-bearing note in the face amount of $1,062,937 (an inputed rate of 10%). The goods have an inventory cost on Parnevik’s books of $400,000. Pre
> Access the glossary (“Master Glossary”) to answer the following. a. What is the definition of a customer? b. What is a performance obligation? c. How is standalone selling price defined? d. What is a transaction price?
> A metal tank with volume 3.10 L will burst if the absolute pressure of the gas it contains exceeds 100 atm. (a). If 11.0 mol of an ideal gas is put into the tank at 23.0°C, to what temperature can the gas be warmed before the tank ruptures? Ignore the th
> A diver observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). The temperature at the bottom is 4.0°C, and the temperature at the surface is 23.0° C. (a). What
> If a certain amount of ideal gas occupies a volume V at STP on earth, what would be its volume (in terms of V) on Venus, where the temperature is 1003°C and the pressure is 92 atm?
> An ideal gas has a density of 1.33 × 10-6 g/cm3 at 1.00 × 10-3 atm and 20.00 C. Identify the gas.
> The gas inside a balloon will always have a pressure nearly equal to atmospheric pressure, since that is the pressure applied to the outside of the balloon. You fill a balloon with helium (a nearly ideal gas) to a volume of 0.600 L at 19.00 C. What is th
> An empty cylindrical canister 1.50 m long and 90.0 cm in diameter is to be filled with pure oxygen at 22.0 0C to store in a space station. To hold as much gas as possible, the absolute pressure of the oxygen will be 21.0 atm. The molar mass of oxygen is
> A Jaguar XK8 convertible has an eight-cylinder engine. At the beginning of its compression stroke, one of the cylinders contains 499 cm3 of air at atmospheric pressure (1.01 × 105 Pa) and a temperature of 27.0 0C. At the end of the stroke, the air has be
> You have several identical balloons. You experimentally determine that a balloon will break if its volume exceeds 0.900 L. The pressure of the gas inside the balloon equals air pressure (1.00 atm). (a). If the air inside the balloon is at a constant 22.
> A 3.00-L tank contains air at 3.00 atm and 20.00 C. The tank is sealed and cooled until the pressure is 1.00 atm. (a). What is the temperature then in degrees Celsius? Assume that the volume of the tank is constant. (b). If the temperature is kept at t
> Helium gas with a volume of 3.20 L, under a pressure of 0.180 atm and at 41.00 C, is warmed until both pressure and volume are doubled. (a). What is the final temperature? (b). How many grams of helium are there? The molar mass of helium is 4.00 g/mol.
> An oscillator vibrating at 1250 Hz produces a sound wave that travels through an ideal gas at 325 m/s when the gas temperature is 22.0 0C. For a certain experiment, you need to have the same oscillator produce sound of wavelength 28.5 cm in this gas. Wha
> A 20.0-L tank contains 4.86 × 10-4 kg of helium at 18.0 °C. The molar mass of helium is 4.00 g/mol. (a). How many moles of helium are in the tank? (b). What is the pressure in the tank, in pascals and in atmospheres?
> A vessel whose walls are thermally insulated contains 2.40 kg of water and 0.450 kg of ice, all at 0.0 °C. The outlet of a tube leading from a boiler in which water is boiling at atmospheric pressure is inserted into the water. How many grams of steam mu
> A 4.00-kg silver ingot is taken from a furnace, where its temperature is 750.0 °C, and placed on a large block of ice at 0.0° C. Assuming that all the heat given up by the silver is used to melt the ice, how much ice is melted?
> An insulated beaker with negligible mass contains 0.250 kg of water at 75.0° C. How many kilograms of ice at -20.0° C must be dropped into the water to make the final temperature of the system 40.0 °C?
> A laboratory technician drops a 0.0850-kg sample of unknown solid material, at 100.0 °C, into a calorimeter. The calorimeter can, initially at 19.0° C, is made of 0.150 kg of copper and contains 0.200 kg of water. The final temperature of the calorimeter
> An asteroid with a diameter of 10 km and a mass of 2.60 × 1015 kg impacts the earth at a speed of 32.0 km/s, landing in the Pacific Ocean. If 1.00% of the asteroid’s kinetic energy goes to boiling the ocean water (assume an initial water temperature of 1
> Evaporation of sweat is an important mechanism for temperature control in some warm-blooded animals. (a). What mass of water must evaporate from the skin of a 70.0-kg man to cool his body 1.00C ? The heat of vaporization of water at body temperature (3
> Camels require very little water because they are able to tolerate relatively large changes in their body temperature. While humans keep their body temperatures constant to within one or two Celsius degrees, a dehydrated camel permits its body temperatur
> What is the amount of heat input to your skin when it receives the heat released (a). by 25.0 g of steam initially at 100.0 °C, when it is cooled to skin temperature 134.0° C2? (b). By 25.0 g of water initially at 100.0 °C, when it is cooled to 34.0° C
> What must the initial speed of a lead bullet be at 25.0 °C so that the heat developed when it is brought to rest will be just sufficient to melt it? Assume that all the initial mechanical energy of the bullet is converted to heat and that no heat flows f
> A welder using a tank of volume 0.0750 m3 fills it with oxygen (molar mass 32.0 g/mol) at a gauge pressure of 3.00 × 105 Pa and temperature of 37.00 C. The tank has a small leak, and in time some of the oxygen leaks out. On a day when the temperature is
> An open container holds 0.550 kg of ice at -15.0° C. The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 800.0 J/min for 500.0 min. (a). After how many minutes does the ice start to melt? (b). After how m
> How much heat is required to convert 18.0 g of ice at -10.0° C to steam at 100.0 °C? Express your answer in joules, calories, and Btu.
> An ice-cube tray of negligible mass contains 0.290 kg of water at 18.0° C. How much heat must be removed to cool the water to 0.00 °C and freeze it? Express your answer in joules, calories, and Btu.
> Before going in for his annual physical, a 70.0-kg man whose body temperature is 37.0° C consumes an entire 0.355-L can of a soft drink (mostly water) at 12.0 °C. (a). What will his body temperature be after equilibrium is attained? Ignore any heating by
> A 6.00-kg piece of solid copper metal at an initial temperature T is placed with 2.00 kg of ice that is initially at -20.0° C. The ice is in an insulated container of negligible mass and no heat is exchanged with the surroundings. After thermal equilibri
> A copper pot with a mass of 0.500 kg contains 0.170 kg of water, and both are at 20.0°C. A 0.250-kg block of iron at 85.0°C is dropped into the pot. Find the final temperature of the system, assuming no heat loss to the surroundings.
> A copper calorimeter can with mass 0.100 kg contains 0.160 kg of water and 0.0180 kg of ice in thermal equilibrium at atmospheric pressure. If 0.750 kg of lead at 255° C is dropped into the calorimeter can, what is the final temperature? Assume that no h
> A blacksmith cools a 1.20-kg chunk of iron, initially at 650.0° C, by trickling 15.0 °C water over it. All of the water boils away, and the iron ends up at 120.0 ° C. How much water did the blacksmith trickle over the iron?
> One suggested treatment for a person who has suffered a stroke is immersion in an ice-water bath at 0°C to lower the body temperature, which prevents damage to the brain. In one set of tests, patients were cooled until their internal temperature reached
> A submerged scuba diver hears the sound of a boat horn directly above her on the surface of the lake. At the same time, a friend on dry land 22.0 m from the boat also hears the horn (Fig. E16.7). The horn is 1.2 m above the surface of the water. What is
> A 500.0-g chunk of an unknown metal, which has been in boiling water for several minutes, is quickly dropped into an insulating Styrofoam beaker containing 1.00 kg of water at room temperature (20.0 °C). After waiting and gently stirring for 5.00 minutes
> You have 750 g of water at 10.0° C in a large insulated beaker. How much boiling water at 100.0°C must you add to this beaker so that the final temperature of the mixture will be 75° C?
> A 15.0-g bullet traveling horizontally at 865 m/s passes through a tank containing 13.5 kg of water and emerges with a speed of 534 m/s. What is the maximum temperature increase that the water could have as a result of this event?
> A technician measures the specific heat of an unidentified liquid by immersing an electrical resistor in it. Electrical energy is converted to heat transferred to the liquid for 120 s at a constant rate of 65.0 W. The mass of the liquid is 0.780 kg, and
> A 25,000-kg subway train initially traveling at 15.5 m/s slows to a stop in a station and then stays there long enough for its brakes to cool. The station’s dimensions are 65.0 m long by 20.0 m wide by 12.0 m high. Assuming all the work done by the brake
> While painting the top of an antenna 225 m in height, a worker accidentally lets a 1.00-L water bottle fall from his lunchbox. The bottle lands in some bushes at ground level and does not break. If a quantity of heat equal to the magnitude of the change
> Conventional hot-water heaters consist of a tank of water maintained at a fixed temperature. The hot water is to be used when needed. The drawbacks are that energy is wasted because the tank loses heat when it is not in use and that you can run out of ho
> You are given a sample of metal and asked to determine its specific heat. You weigh the sample and find that its weight is 28.4 N. You carefully add 1.25 × 104 J of heat energy to the sample and find that its temperature rises 18.0C . What is the sampl
> In very cold weather a significant mechanism for heat loss by the human body is energy expended in warming the air taken into the lungs with each breath. (a). On a cold winter day when the temperature is -20° C, what amount of heat is needed to warm to
> While running, a 70-kg student generates thermal energy at a rate of 1200 W. For the runner to maintain a constant body temperature of 37 C, this energy must be removed by perspiration or other mechanisms. If these mechanisms failed and the energy could
> (a). In a liquid with density 1300 kg/m3, longitudinal waves with frequency 400 Hz are found to have wavelength 8.00 m. Calculate the bulk modulus of the liquid. (b). A metal bar with a length of 1.50 m has density 6400 kg/m3. Longitudinal sound waves t
> In an effort to stay awake for an all-night study session, a student makes a cup of coffee by first placing a 200-W electric immersion heater in 0.320 kg of water. (a). How much heat must be added to the water to raise its temperature from 20.0 C to 80.
> The shock-wave cone created by a space shuttle at one instant during its reentry into the atmosphere makes an angle of 58.0 with its direction of motion. The speed of sound at this altitude is 331 m/s. (a). What is the Mach number of the shuttle at thi
> A jet plane flies overhead at Mach 1.70 and at a constant altitude of 1250 m. (a). What is the angle a of the shock-wave cone? (b). How much time after the plane passes directly overhead do you hear the sonic boom? Neglect the variation of the speed of
> An aluminum tea kettle with mass 1.10 kg and containing 1.80 kg of water is placed on a stove. If no heat is lost to the surroundings, how much heat must be added to raise the temperature from 20.0 °C to 85.0 °C?
> A stationary police car emits a sound of frequency 1200 Hz that bounces off a car on the highway and returns with a frequency of 1250 Hz. The police car is right next to the highway, so the moving car is traveling directly toward or away from it. (a). H
> The siren of a fire engine that is driving northward at 30.0 m/s emits a sound of frequency 2000 Hz. A truck in front of this fire engine is moving northward at 20.0 m/s. (a). What is the frequency of the siren’s sound that the fire engine’s driver hear
> Two swift canaries fly toward each other, each moving at 15.0 m/s relative to the ground, each warbling a note of frequency 1750 Hz. (a). What frequency note does each bird hear from the other one? (b). What wavelength will each canary measure for the
> While sitting in your car by the side of a country road, you are approached by your friend, who happens to be in an identical car. You blow your car’s horn, which has a frequency of 260 Hz. Your friend blows his car’s horn, which is identical to yours, a
> Steel train rails are laid in 12.0-m-long segments placed end to end. The rails are laid on a winter day when their temperature is -9.0° C. (a) How much space must be left between adjacent rails if they are just to touch on a summer day when their tempe
> A railroad train is traveling at 30.0 m/s in still air. The frequency of the note emitted by the train whistle is 352 Hz. What frequency is heard by a passenger on a train moving in the opposite direction to the first at 18.0 m/s and (a). approaching th
> (a) Calculate the density of the atmosphere at the surface of Mars (where the pressure is 650 Pa and the temperature is typically 253 K, with a CO2 atmosphere), Venus (with an average temperature of 730 K and pressure of 92 atm, with a CO2 atmosphere), a
> A swimming duck paddles the water with its feet once every 1.6 s, producing surface waves with this period. The duck is moving at constant speed in a pond where the speed of surface waves is 0.32 m/s, and the crests of the waves ahead of the duck are spa
> (a) A sound source producing 1.00-kHz waves moves toward a stationary listener at one-half the speed of sound. What frequency will the listener hear? (b). Suppose instead that the source is stationary and the listener moves toward the source at one-half
> Two train whistles, A and B, each have a frequency of 392 Hz. A is stationary and B is moving toward the right (away from A) at a speed of 35.0 m/s. A listener is between the two whistles and is moving toward the right with a speed of 15.0 m/s (Fig. E16.
> A railroad train is traveling at 25.0 m/s in still air. The frequency of the note emitted by the locomotive whistle is 400 Hz. What is the wavelength of the sound waves (a). in front of the locomotive and (b). behind the locomotive? What is the frequen
> As a new mechanical engineer for Engines Inc., you have been assigned to design brass pistons to slide inside steel cylinders. The engines in which these pistons will be used will operate between 20.0 °C and 150.0 °C. Assume that the coefficients of expa
> In Example 16.18 (Section 16.8), suppose the police car is moving away from the warehouse at 20 m/s. What frequency does the driver of the police car hear reflected from the warehouse?
> A machinist bores a hole of diameter 1.35 cm in a steel plate that is at 25.0° C. What is the cross-sectional area of the hole (a). at 25.0° C and (b) when the temperature of the plate is increased to 175 °C? Assume that the coefficient of linear expansi
> The motors that drive airplane propellers are, in some cases, tuned by using beats. The whirring motor produces a sound wave having the same frequency as the propeller. (a). If one single-bladed propeller is turning at 575 rpm and you hear 2.0-Hz beats
> A violinist is tuning her instrument to concert A (440 Hz). She plays the note while listening to an electronically generated tone of exactly that frequency and hears a beat frequency of 3 Hz, which increases to 4 Hz when she tightens her violin string s
> Two guitarists attempt to play the same note of wavelength 64.8 cm at the same time, but one of the instruments is slightly out of tune and plays a note of wavelength 65.2 cm instead. What is the frequency of the beats these musicians hear when they play
> Convert the following Celsius temperatures to Fahrenheit: (a) -62.8 C, the lowest temperature ever recorded in North America (February 3, 1947, Snag, Yukon); (b). 56.7 C, the highest temperature ever recorded in the United States (July 10, 1913, Death V
> Two small stereo speakers are driven in step by the same variable-frequency oscillator. Their sound is picked up by a microphone arranged as shown in Fig. E16.39. For what frequencies does their sound at the speakers produce (a). constructive interferenc
> Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase. The frequency of the waves emitted by each speaker is 172 Hz. You are 8.00 m from A. What is the closest you can be to B and be at a point of destructive inte
> The rate at which radiant energy from the sun reaches the earth’s upper atmosphere is about 1.50 kW/m2. The distance from the earth to the sun is 1.50 × 1011 m, and the radius of the sun is 6.96 × 108 m. (a). What is the rate of radiation of energy per
> Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase. Speaker B is 12.0 m to the right of speaker A. The frequency of the waves emitted by each speaker is 688 Hz. You are standing between the speakers, along the
> Rods of copper, brass, and steel—each with crosssectional area of 2.00 cm2—are welded together to form a Y-shaped figure. The free end of the copper rod is maintained at 100.0° C, and the free ends of the brass and steel rods at 0.0 °C. Assume that there
> One experimental method of measuring an insulating material’s thermal conductivity is to construct a box of the material and measure the power input to an electric heater inside the box that maintains the interior at a measured temperature above the outs
> A carpenter builds a solid wood door with dimensions 2.00 m × 0.95 m × 5.0 cm. Its thermal conductivity is k = 0.120 W/m ∙ K. The air films on the inner and outer surfaces of the door have the same combined thermal resistance as an additional 1.8-cm thic
> The rate of effusion—that is, leakage of a gas through tiny cracks—is proportional to vrms. If tiny cracks exist in the material that’s used to seal the space between two glass panes, how many times greater is the rate of He leakage out of the space betw
> Estimate the ratio of the thermal conductivity of Xe to that of He. (a) 0.015; (b) 0.061; (c) 0.10; (d) 0.17.
> At very low temperatures the molar heat capacity of rock salt varies with temperature according to Debye’s T3 law: where k = 1940 J/mol ∙ K and u = 281 K. (a). How much heat is required to raise the temperature of 1
> In the troposphere, the part of the atmosphere that extends from earth’s surface to an altitude of about 11 km, the temperature is not uniform but decreases with increasing elevation. (a). Show that if the temperature variation is appr
> A metal wire, with density r and Young’s modulus Y, is stretched between rigid supports. At temperature T, the speed of a transverse wave is found to be v1. When the temperature is increased to T +
> Calculate the integral in Eq. (18.31), 0 ∞ v2 f (v2) dv, and compare this result to 1v22av as given by Eq. (18.16). (Hint: You may use the tabulated integral where n is a positive integer and a is a positive constant.) 1.3.5. .•
