Physics question and answers for March 05, 2024
- Q When 41 g of water is cooled from 73 C to 40 C how much heat energy is lost Use 4 186 J g C for specific heat Remember that...
- Q A student mixes 100 g of liquid A at a temperature of 80 C with 100 g of liquid B at a temperature of 20 C After the mixture comes...
- Q The diagram below shows a closed system of two tanks that each contain water 140 mL of water at 20 C 140 mL of water at 72 C When the...
- Q 7 Two iron nails 5 0 g and 2 0 g have the same temperature How does the amount thermal energy in the 5 0 g nail compare to that...
- Q 4 A blacksmith heats a 1 540 g iron horseshoe to a temperature of 1445 C before dropping it into 4 280 g of water at 23 1 C If...
- Q 5 A chemist mixes 75 0 g of an unknown substance at 96 5 C with 1 150 g of water at 25 0 C If the final temperature of...
- Q If 25 6 J of energy raised 786 g of a substance from 20 0 C to 35 0 C what is the specific heat of the substance S Answer...
- Q An 0 03 kg ingot of metal is heated to 200 deg C and then dropped into a calorimeter containing 0 47 kg of water initially at 20 deg C...
- Q The specific heat of aluminum is 0 900 J g C How many joules of heat are absorbed by 30 0 g of aluminum it is heated from 20 0...
- Q Temp C ted by E Lee for Virtual Virginia 2021 150 135 120 105 90 75 60 45 30 A 15 B C D Heat kJ ing this heating curve...
- Q How many calories are required to heat up 1 70 kg of water from 10 00 degrees C to 35 0 degrees C 852 040 calories 852 000 calories O204...
- Q Q4 A small m 20g gold bead with a 2cm radius begins at T 22 C The bead is given Q 1 200J of heat in an oven before it...
- Q 7 How much heat is needed to raise the temperature of 200 g of lead c 0 11 kcal kg C by 10 C A 220 cal B 33 0...
- Q Click to see additional instructions Questions 11 15 Shown here is the PT phase diagram for an unknown substance First identify the substance s state of matter in each of...
- Q Questions 16 17 At a science museum a stationary bicycle is connected to an electric generator By pedaling steadily a museum visitor is able to keep a 75 watt light...
- Q 21 How much total heat is required to transform 1 46 liters of liquid water that is initially at 25 0 C entirely into H O vapor at 100 C...
- Q Questions 18 19 A particular kitchen blender delivers 1100 watts of mechanical power while blending the mixed fruit in its carafe to make a smoothie Assume that 100 of this...
- Q 22 How much total heat is needed to fully melt 13 6 kg of silver if the silver starts as a 25 0 C solid Convert your final answer to...
- Q 20 A 2 20 kg iron pot contains 3 00 kg of water all initially at 25 0 C A hot iron horseshoe with a mass of 493 grams is...
- Q A CUP HOLDS 500 GRAMS OF WATER c 4 19 J g C AT A TEMPERATURE OF 80 C IT IS ADDED TO ANOTHER CUP CONTAINING 800 GRAMS OF ETHANOL...
- Q 4 A 0 125 kg block of an unknown substance with a temperature of 99 0 C is placed in an insulating container containing 0 400 kg of water at...
- Q The following information is given for mercury Hg at 1atm AHvap 357 C 59 3 kJ mol boiling point 357 C specific heat liquid 0 139 J g C At...
- Q A sample of copper is heated to 590 C and placed in 400 g of water at 21 5 C The final temperature of the copper water mixture is 48...
- Q How many Joules are given off when 120 0 grams of water are cooled from 25 to 25 C Use the chart below to answer Specific heat of ice Specific...
- Q How many Joules are required to boil 150 0 grams of water Use the chart below to answer Specific heat of ice Specific heat of water Specific heat of steam...
- Q All changes save 3 A sample of 60 grams of water at 56 C is mixed in a styrofoam container with 89 grams of water at 30 C What is...
- Q 600 g of water at 21 0 C is placed in an insulated Styrofoam cup Next a piece of ice of mass 230 g at an initial temperature of 10...
- Q If the heat capacities of both ice and steam are 0 5 cal g C the quantity of heat required to change 1 g of ice at 10 C to...
- Q According to Newton s Law of Cooling if a body with temperature T is placed in surroundings with temperature To different from that of T the body will either cool...
- Q How much heat is needed to raise the temperature of 200 g of lead c 0 11 kcal kg C by 10 C 20 kcal 2000 cal 220 cal 33...
- Q 011 10 0 points A jar of tea is placed in sunlight until it reaches an equilibrium temperature of 31 5 C In an attempt to cool the liquid which...
- Q A sample of gaseo the final temperat Answer
- Q If you mix 3 liters of 40C water with 3 liters of 60C water, you will end up with 6 liters of water at what temperature? A. not enough informationB....
- Q Calculate the rate of heat conduction out of the human body, assuming that the core internal temperature is 35.24 C, the skin temperature is 32.57 C, the thickness of the...
- Q How much heat per second would pass through an iron plate that is 1.7 cm thick if one face is at151C and the other is at 130C? Its cross- sectional...
- Q A 35 g block of ice is cooled to -61C. It is added to 592 g of water in an 81 g copper calorimeter at a temperature of 21C. Find...
- Q A 100.0 gram sample of water is placed into a calorimeter. The initial temperature of the water is 22.2C. A reaction is performed in the presence of the water, and...
- Q A certain oil used in industrial transformers has a density of 1.174 g/mL and a specific heat of 1.348 Jg-1 C-1.Calculate the heat capacity of one gallon of this oil.Given:...
- Q A 5.0-kg chunk of copper is cooled to 195 K in frozen carbon dioxide. It is then placed into a bath of water at 0C. How much water freezes? (The...
- Q 200. g of ice is put in a perfectly insulated thermos containing 800. g of tea. 100. g of ice melts before equilibrium is established and the temperature of the...
- Q (a) Calculate the work done by a gas in a cylinder if the gas absorbs 4.50 joules of heat(Q) and expands to a volume of 0.0010 m against a constant...
- Q A student doing an experiment pours 0.500 kg of heated metal whose temperature is98.0 C into 0.347 kg aluminum calorimeter cup containing 0.279 kg of water at28.0 C. The mixture...
- Q A piece of metal, with a low specific heat capacity, and an equally massive piece of concrete, with a high specific heat capacity, are set on a very large block...
- Q What minimum heat is needed to bring 50 g of water at 30 C to the boiling point and completely boil it away? The specific heat of water is 4190...
- Q The temperature of a brass bar rises by 10.0C when it absorbs 2.00 kJ of energy by heat. The mass of the bar is 525 g. Determine the specific heat...
- Q If 200 ml of tea at 90 C is poured into a 400 g glass cup initially at 25 C, what would be the final temperature of the mixture? Note:...
- Q Suppose 24 kg of 90.5 C water is placed in contact with 24 kg of 9.5 C water.33% Part (a) What is the energy change, in joules, in the hot...
- Q you hammer a nail into wood, the nail heats up. 30 Joules of energy was absorbed by a 5-g nail as it was hammered into place. How much does the...
- Q You have equal masses of two different substances, A and B. Initially substance A starts at 90.1C and substance B starts at 30.2C. You place them in a well-insulated container...
- Q The volume of a substance, A, measured in cubic centimeters increases according to the exponential growthdA0.3A, where t is measured in hours. The volume of another substance, B, also measured...
- Q A 65.0 g piece of iron at 525 C is put into 635 grams of water at 15.0 C. What is the final temperature of the water and the iron?...
- Q You have 1 kg of water and you want to use that to melt 0.1 kg of ice. What is the minimum temperature necessary in the water, to just barely...
- Q An ice cube (T=0 C) is added to a 50 g aluminum cup containing 400 g of water initially at 18C. If the resulting temperature of the cooled water is...
- Q Excited about the success of celebrity stamps, post office officials were rumored to have put forth a plan to institute two new types of thermometers. On these new scales, E...
- Q If a cold spoon is placed into a mug of hot coffee, which of the following correctly describes what happens?A. The cold spoon decreases in temperature, and the hot coffee...
- Q When steam condenses1. Only two of these occur.2. All of these occur.3. molecules move closer together.4. it changes from the gas phase to the liquid phase.5. Only one of these...
- Q In 2010 a well being drilled from the Deepwater Horizon platform in the Gulf of Mexico blew out, spilling some 5 million barrels of oil into the Gulf over 3...
- Q Liquid nitrogen, which has a boiling point of 77 K, is commonly used to cool substances to low temperatures. How much energy must be removed from 1.0 kg of gaseous...
- Q Here you'll calculate the power output of a car in two ways: (1) using the fact that the car has a 250-horse- power engine and (2) krowing that the car...
- Q Years ago, a block of ice with a mass of about 23 kg was used daily in a home icebox. The temperature of the ice was 0.0C when delivered. As...
- Q 2.0 kg of liquid water is boiled at 100 C and all of it is converted to steam. If the change of statetakes place at the atmospheric pressure (1.01 x...
- Q If two small beakers of water, one at 60C and one at 70C, are mixed in a larger beaker, what is the final temperature of the water?less than 60Cthe temperature...
- Q The temperature scale where water boils at 212 isO KelvinO FahrenheitO Celsius
- Q When 30g of ice at 0 degree C is mixed with m grams of water at 20C exactly half of the ice melted. Finda) The final temperature of the ice-...
- Q 800 g of the ideal gas is contained in a rigid container of the volume V at 2 atm and 25 degrees C.If the number of molecules in the container...
- Q Which of the following statements is true concerning temperature scales?a. Fahrenheit degrees are larger than Celsius degrees.b. Kelvins are larger than Celsius degrees.c. The Celsius scale is a relative scale.d....
- Q On a trip, you notice that a 3.50-kg bag of ice lasts an average of one day in your cooler. What is the average power in watts entering the ice...
- Q The filament of a light bulb has surface area 64 mm The filament can be considered as a black body at temperature 2500 K emitting radiation like a point source...
- Q Two spheres A and B have the same radii but the heat capacity of A is greater than that of B The surfaces of both are painted black They are...
- Q A thermocouple of negligible resistance produces an e m f of 40 V C in the linear range of temperature A galvanometer of resistance 10 ohm whose sensitivity is 1...
- Q 8 Two identical bodies are made of a material for which the heat capacity increases with temperature One of these is at 100 C while the other one is at...
- Q Consider a sphere of radius R with a power source inside it The power of source is P In steady state temperature of surface of the sphere is T The...
- Q Thermocouples are used to measure temperature in the linear parts of the emf versus temperature graph with cold junction at 0 C The thermo electric power of Pt Ni thermocouple...
- Q Three very large plates of the same area are kept parallel and close to each other They are considered as ideal black surfaces and have very high thermal conductivity The...
- Q The energy transferred in 1 hour by conduction through a concrete wall 2 m high 3 65 m long and 0 2m thick if one side of the wall is...
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