A sleeping 68 kg man has a metabolic power of 75 W . How many Calories does he burn during an 8.0 hour sleep? Express your answer using two significant figures.

Q: A hot air balloon is being inflated to its full extent by heating the air inside it. In the final…

A:

Q: You are boiling water in a pot on the stove for your herbal tea. There is 0.15kg of water in the pot…

A: Mass of water (M) = 0.15kg Initial state : Liquid at 100°C temperature Final state :  Solid at…

Q: A crate of fruit with a mass of 31.0 kg and a specific heat capacity of 3600j/(kgxk) slides 8.40m…

A:

Q: A 2000kg car is advertised that it can go from rest to 30m/s, drives 100km, and 3000m in height on 1…

A: Part (a): The 1 gram of gasoline gives 5×104 J of heat energy. Hence, the total heat energy (Q)…

Q: A 4-ton air conditioner removes 5.06×107 J (48,000 British thermal units) from a cold environment in…

A: Given: air conditioner removes 5.06×107 J Or 48000 British thermal units Time 1 hr or 3600 sec (a)…

Q: After you drive for a while your tires will gain some energy via friction and heat up. If the air…

A: Given  Heat added Q=150J  Work done by gas W=100J

Q: A weightlifter has a basal metabolic rate of 80.0 W. As he is working out, his metabolic rate…

A: Part A:

Q: A container holds 4.0 x 1022 molecules of an ideal gas at 0 °C. A piston compresses the gas, doing…

A:

Q: A 46-kg woman cheats on her diet and eats a 685-Calorie (685 kcal) jelly doughnut for breakfast.…

A:

Q: A coal- burning steam locomotive heats steam to 180°C and exhausts it at 100°C. During 1 s of its…

A: Refer Table “Heat engine efficiencies. Typical input and exhaust temperatures, ideal (best possible)…

Q: We heat water in a pool with dimensions 10 × 5.0 × 2.0 m3 with a heater so that the temperature is…

A: Given data V=100 m3T1=10 KT2=0.005 Kt=5 min

Q: Solar energy is used for air conditioning a house. To maintain a pressurized water tank at 443 K…

A:

Q: How much metabolic energy should a 200 g bird expend when flying 20 meters? Ignore friction losses,…

A: mass = 200 g acceleration = 1 kg / 1000 g distance = 20 meter

Q: A pearl diver fills his lungs with 5.25 LL of air at normal atmospheric pressure and then dives to…

A: Initial volume, V1 = 5.25 L => V1 = 5.25*10-3 m3 Initial pressure, P1 = 1 atm => P1 = 101325…

Q: If you are stranded in a cold and snowy environment, it is never a good idea to eat snow for…

A:

Q: A soft drink manufacturer clains that a new diet drink is "low Joule." The label indicates the…

A:

Q: Alice, whose mass is 55 kg, eats a jelly doughnut for breakfast. According to the nutrition label,…

A: The energy possessed by an object when it is raised to an height h above the ground is known as the…

Q: A gas is compressed inside a cylinder. An average force of 68 N acts to move the piston 1.5 m.…

A:

Q: The efficiency of a muscle during weight lifting is equal to the work done in lifting the weight…

A: efficiency of a muscle during weight lifting is equal to the work done in lifting the weight divided…

Q: m = 0.517 kg of methanol in atmospheric pressure is heated with an electric heater from T₁ = 27.9 °C…

A: Densityρ is given by:Densityρ=massmvolumeV

Q: Air conditioners sold in the United States are given a seasonal energy-efficiency ratio (SEER)…

A: Temperature inside = 24∘ C = 24 +273 K =297 K Temperature outside =35∘C=35+273K =308 K To find SEER…

Q: An ideal gas with an initial temperature of 300 K is isobarically cooled at a pressure of 25 Pa. Its…

A:

Q: The internal energy of a system is initially 24 J. The system does 25 J of work. What is the…

A: Given data:  Initial internal energy (Ui) = 24 J Work done by the system (W) = 25 J Heat added to…

Q: A weightlifter drinks a protein shake that contains 2.00 × 10² Calories. She then performs multiple…

A: Given Data:The protein shake contains the amount of energy isThe work done by the weightlifter is…

Q: A power plant taps steam superheated by geothermal energy to 558 K (the temperature of the hot…

A: Given data: Temperature of hot reservoir, Th=558 K Temperature of cold reservoir, Tc=305 K Output…

Q: A typical weather balloon is made of a thin latex envelope that takes very little force to stretch,…

A:

Q: A 53-kg mountain climber, starting from rest, climbs a vertical distance of 764 m. At the top, she…

A:

Q: A gasoline engine has a power output of 170 kW (about 2.28×105 hp ). Its thermal efficiency is 22.0…

A:

Q: A 55.0kg woman eats a 540 Calorie jelly doughnut for breakfast. (a) How many joules of energy are…

A:

Q: A 60 kg woman cheats on her diet and eats a 493 Calorie (493 kcal) jelly donut for breakfast. (a)…

A:

Q: (a) How many joules of energy are the equivalent of one jelly doughnut? (b) How many stairs must the…

A: The weight of the woman is w=58 kg. The woman eats 555 kcal.

Q: A weightlifter has a basal metabolic rate of 80.0 W. As he is working out, his metabolic rate…

A: Dear student, this question contains more than three sub-parts. We will answer first three…

Q: The motor that drives a refrigerator produces 151 W of useful power. The hot and cold temperatures…

A:

Q: If I add 11664 J of energy to an ideal gas inside a balloon, causing the internal energy to increase…

A: Write the given values with the suitable variables. Q=11664 JΔU=7278 J Here, Q and ΔU are the amount…

Q: A 46-kg woman cheats on her diet and eats a 555-Calorie (555 kcal) jelly doughnut for breaktast. (a)…

A: In this question it is given that a woman with weight 46 kg  is on dieting she cheats her diet and…

Q: The formula for work in thermodynamics is given by PV=W. Suppose that at any pressure, P=h(V+Vo-1)…

A: The expression for the work done can be written as W=PVW=hV+V0-1VW=hV2+hVV0…

Q: A 46-kg woman eats a 522 Calorie (522 kcal) jelly doughnut for breakfast. (a) How many joules of…

A: Given: mass of woman, m = 46 kg doughnut jelly energy, E= 522 calorie To Find: (a) Joule of energy…

Q: If I add 12,183 J of energy to an ideal gas inside a balloon causing the internal energy to increase…

A: Given data: Q=12183 J∆U=5185 JNeed to determine the work is done on the environment by the gas as…

Q: How much work must be done by this heat pump to supply 2550 J of heat on a day when the outside…

A: Given data : Heat supply to heat pump is, Q=2550 J. Outside temperature is, To=253 K.

Q: A spring has a natural length of 40 cm. A force of 60N is required to keep the spring compressed 10…

A: Given data:  Natural length (L0) = 40 cm Focal (F) = 60 N Comparison (x) = 10 cm = 0.10 m Required:…

Q: A 220-lb athlete drinks a glass of soda (125 calories) and walks up to the top of a Library…

A: We will use first law of thermodynamics which states in terms of equation is that,…

Q: The driver of a car that has a mass of 1400 kg is coasting down a hill. He sees a stop sign at the…

A:

Q: A gas is compressed inside a cylinder. An average force of 67 N acts to move the piston 4.4 m.…

A:

Q: What is the change in internal energy of a system which does 0.42 J of work while 8.87 J of heat…

A: