A 15-g lead bullet is tested by firing it into a fixed block ofwood with a mass of 35 kg. The block and imbedded bullettogether absorb all the heat generated. After thermal equilibrium has been reached, the system has a temperature rise measured as 0.020 C°. Estimate the bullet’s entering speed.

Q: Calculate the temperature the entire sky would have to be in order to transfer energy by radiation…

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Q: A 5-kg iron block released from a height of 200 m, reaches the ground at a speed of 30 m/s. What is…

A: Relation between heat transfer and temperature change is given by- Q=mc∆T, where-Q is heat transferm…

Q: A 1.3 kg metal head of a geology hammer strikes a solid rock with a speed of 3.7 m/s. Assuming all…

A: Since all the energy of the hammer is transferred into heat energy  Q=K.Ewhere Q is the heat…

Q: A wall is built of two metals (copper and aluminum) that are in thermal contact with each other. If…

A: Given: temperature difference across both metals = 31.6Kthickness of copper LCu=1.05 cmthickness of…

Q: A long steel I-beam used in bridge construction has a length of 19.0 m. The beam may be exposed to…

A: Given data: Length of beam is, L=19.0 m. Value of low temperature is, T1=-20∘C. Value of high…

Q: 600g of ice at -8°C is put inside a calorimeter filled with 4000g water at 20 °C. What is the final…

A: Given data: The mass of ice is m=600 g. The temperature of ice is Ti=-8°C. The mass of water is…

Q: The formation of condensation on a glass of ice water causes the ice to melt faster than it would…

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Q: 15oC. How lon

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Q: A 2.00-g lead bullet is shot with a speed of 250 m/s into a wooden wall. Assuming that all of its…

A: Given Mass of bullet m = 2 g = 2 × 10-3 kg Speed v = 250 m/s Specific heat of lead = 129 J/kg oC

Q: Calculate the temperature the entire sky would have to be in order to transfer energy by radiation…

A: Given: The radiated energy is 1000 W/m2. The temperature is 27.0 °C.

Q: A hot 120 g block of copper is quickly placed into a beaker of negligible heat capacity containing…

A: Given: The mass of the copper is 120 g. The mass of the water is 300 g. The initial temperature of…

Q: A hard-boiled egg at 98°C is put in a sink of 18°C water. After 5 min, the egg’s temperature is…

A: From Newton’s law of cooling

Q: On a hot dry day, evaporation from a lake has just enough heat transfer to balance the 1.00 kW/m2 of…

A:

Q: 3) 28 g of ice at -10°C is dropped in an insulated 75-g aluminum calorimeter cup containing 140 g of…

A: Given data   The mass of the ice mi = 28 g. The temperature of the ice Ti = -10°C. The mass of the…

Q: Suppose that the typical speed (vrms) of carbon dioxide molecules (molar mass is 44.0 g/mol) in a…

A: From kinetic theory of gases, the expression for the rms velocity is:

Q: A 2-m long aluminum pipe at 27°C is heated until it is 2.0024 m long at 77°C. Calculate the…

A: When heat is applied to an object, the length of the object will expand according to the material…

Q: The Trans-Alaska pipeline is 1 300 km long, reaching from Prudhoe Bay to the port of Valdez. It…

A: Given data: The length is, L=1300 km Initial temperature T1=-73 C Initial temperature T2=35 C Step…

Q: A bubble rises from the bottom of a lake of depth 80.00 m, where the temperature is temperature at…

A: Given Depth of lake, h=80 mAt Bottom T1=7°C=7+273=280 K , d1=1 mm=10-3 mAt surfaceT2=19°C 19+273=292…

Q: A 50 cm by 100 cm stainless steel plate with emissivity of 0.85 is maitained at 500 degrees Celsius.…

A: Given: Area of steel body = 50 cm × 100 cm. Emissivity (e) = 0.85 Temperature at which body is kept…

Q: On a hot day, the temperature of an 82000-L swimming pool increases by 1.45°C. What is the net neat…

A: Volume (V)=82000L Temperature=1.45°C

Q: If at instant t = 0 the temperature difference is ∆T0, show that at a later instant t the…

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Q: Question 2.2: Water at a temperature of T= 25°C flows over one ofthe surfaces of a steel wall (AISI…

A: Given: T∞ = 25°CTs1 = 40°CTs2 = 100°CThermal conductivity = h = 61.7 w/m.k.A = 0.35 m2 = 0.1225 m2…

Q: In 1986, a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately…

A:

Q: Question 18: A metal object which is at temperature T is kept in a completely evacuated chanber that…

A: Answer: The value of α = 4

Q: A long steel I-beam used in bridge construction has a length of 17.0 m. The beam may be exposed to…

A: Given, Length = 17.0 m lowest temperature = -23 degree celsius  giher temperature = 40 degree…

Q: Following vigorous exercise, the internal body temperature of a 69.5-kg person is 40.0°C.  At what…

A:

Q: . (II) A 55-g bullet traveling at 250 m/s penetrates a block ofice at 0°C and comes to rest within…

A: Since the temperature of the bullet does not change, we can assume that during the collision, the…

Q: A mFe = 0.16 kg mass of iron is heated to 100∘C and then placed in a Styrofoam cup containing mw =…

A:

Q: An object of mass 6.50 kg falls through a height of 50.0 m and, by means of a mechanical linkage,…

A: Given that, The mass of an object, m = 6.5 kg It falls through a height of 50 m The mass of water,…

Q: The human body, while at rest, produces heat energy at a rate of about 103 W. How much sweat (in g)…

A: The expression for the amount of sweat is,

Q: During a cold winter day, wind at 55 km/h is blowing parallel to a 4-m-high and 10-m-long wall of a…

A:

Q: The latent heat of vaporization of H,O at body temperature (37.0 °C) is 2.42 × 10ʻ J/kg. To cool the…

A: The jogger’s mass is, The latent heat of vaporization of water at 37 degrees Celsius is, The…

Q: An object was placed in a freezer maintained at temperature -15 degrees Celsius. Assuming the system…

A:

Q: Though Babatunde's family take oats for breakfast, her mum decides that today they would take tea.…

A: Given The mass of the aluminum cup is mal=120 g=120×10-3 kg=0.120 kg. The mass of tea is mtea=0.30…

Q: 7B. A 98.2 g copper rod is cooled from 80°C to 25°C by tossing it into a very large swimming pool at…

A: Given information: The mass of copper (m) = 98.2 g = 0.0982 kg initial temperature of the copper…

Q: s of water at 20.0°C must be allowed to come to thermal equilibrium with a 1.95-kg cube of aluminum…

A:

Q: A car engine burns 10 Ibm of fuel (equivalent to addition of Q+) at 2600 R and rejects energy to the…

A:

Q: (c) 65g of ice of 0°C is added to 150 g of water at 50°C and the mixture attains the temperature of…

A:

Q: A 2-m long aluminum pipe at 27°C is heated until it is 2.0024 m long at 77°C. Calculate the…

A: Given that, The length of the Aluminium pipe, l = 2 m Initial temperature, T1 = 27°C Final…

Q: A thirsty nurse cools a 2.00 L bottle of a soft drink (mostlywater) by pouring it into a large…

A: Given:- A thirsty nurse cools a 2.00 L of water =2.0 kg  The mass of the aluminum mug is 0.257 kg…

Q: The specific heat capacity of water is extremely high. If it were much lower, say, one-fifth as…

A:

Q: Inside the wall of a house, an L-shaped section of hot-water pipe consists of three parts: a…

A:

Q: Oil at 60°C flows at a velocity of 20 cm/s over a5.0-m-long and 1.0-m-wide flat plate maintained at…

A:

Q: A long steel I-beam used in bridge construction has a length of 19.0 m. The beam may be exposed to…

A:

First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.