e cost of electricity is 8¢ per kW·h, what does it cost to heat 160 L of water for a bath from 9.5°C (the temperature of the water entering the house) to 70°C?

Q: An electric immersion heater has a power rating of 1800 W. If the heater is placed in a 1.3 kg of…

A: Given data:  Mass (m) = 1.3 kg Initial temperature (Ti) = 30°C Final temperature (Tf) = 100°C…

Q: A copper block is removed from 345°C oven and immediately dropped into 3.75 L of water at 20°C.in an…

A: (c) given Sp.Heat of water = 4186 J/kg°C Sp.Heat of copper is 385 J/Kg°C   The initial temperature…

Q: The specific heat of water is 4186 J/kg c°. How much does the internal energy of 200 g of water…

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Q: How long does a 65 kg adult need to walk at a rate of 5 km/h in order to burn off all the energy in…

A: Given Metabolic power for walking at  5 km/h is W=380 W Each slice of pizza contains energy of…

Q: A copper block is removed from 215°C oven and immediately dropped into 1.5 L of water at 21.6°C.in…

A: Given: Initial temperature of copper block, Tci=215°C Final temperature of copper block, Tcf=25.35°C…

Q: Water of volume 2 L in a container is heated with a coil of 1 kW at 27°C. The lid of the container…

A: We are aware that a 1 kW coil is heating 2 L of water to a temperature of 27°C in a container.The…

Q: 9.3°C . At what rate in watts must the person transfer thermal energy to reduce the the body…

A: Given Mass of person m =60 kg Body initial temperature = 39.3 0 C FFinal temperature = 370 C TTime…

Q: A painter drops a 3.09 kg can from a height of 10.0 m. What is K (in Joules) at a height of 2.84 m?

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Q: How much heat Q, in Joules, is required to warm up 0.5 kg of water from 20 °C to 30 °C ? (Water…

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Q: 35 g of copper pellets are removed from a 300 degrees Celsius oven and immediately dropped into 100…

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Q: sume a dieter drinks 2.3 kg (i.e., 2.3 L) of ice water every day. The specific heat of water is…

A:

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

A: To find the COP , use the formula as follows: COP= Tc/(Th - Tc) where Tc is the colder temperature…

Q: A 0.264-kg coffee mug is made from a material that has a specific heat capacity of 907 J/kg C° and…

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Q: crate of fruit with a mass of 32.0 kg and a specific heat capacity of 3650 J/(kg⋅K) slides 8.80 mm…

A: According to work energy theorem Work done by net force = change in kinetic energy

Q: Question D1 30 g sweet potato strips originally placed in room temperature (25°C) was deep fried by…

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Q: vessel. The water is initially at 25°C and 1 atm. The coil delivers a steady 3.25 kW of power to the…

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Q: copper kg. of mass 0.12 kg, is placed into the calorimeter. The temperature of both the oil and the…

A:

Q: In an effort to stay awake for an all-night study session, a student makes a cup of coffee by first…

A: Step 1 Given:  Power of heater P=200 W = 200 J             Weight of the water= 0.320 kg…

Q: One ounce of a well-known breakfast cereal contains 99 Calories (1 food Calorie = 4186 J). If 2.4%…

A: In this case, 2.4 % of the potential energy converted. U=2.4%Q=0.024 Q   The expression for the…

Q: 17.26 · In an effort to stay awake for an all-night study session, a student makes a cup of coffee…

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

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Q: A copper block is removed from 330°C oven and immediately dropped into 2.25 L of water at 21°C.in an…

A: Given, Initial temperature of Copper block = 330o C Amount of Water = 2.25 L =2.25 kg Specific Heat…

Q: A small electric immersion heater is used to heat 84 g of water for a cup of instant coffee. The…

A: Given : mass, m = 84 g = 84 × 10-3 Kg  Power, P = 81 W  T1= 21 ℃ = 294 K  T2=100 ℃ = 373 K  Specific…

Q: 184.0 g of water is heated using 61.0 W of power, with perfect efficiency. How long will it take to…

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Q: A steel bucket contains 4 liters of water at 12℃. An electric immersion heater rated at 1400 watts…

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Q: electric hot plate raises its own internal energy and the internal energy of a cup of water by 15000…

A: given Q = -2900 J ΔU = 15000 J

Q: 9. A physics student decides to “burn off” some Calories by climbing a ladder. As the ladder is…

A: Part (a) Given data: The mass of the student is m=75 kg. The calories to burn off is E=1 Calorie…

Q: A solid sphere has a temperature of 603 K. The sphere is melted down and recast into a cube that has…

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Q: An ice bag containing 0°C ice is much more effective in absorbing heat than one containing the same…

A: The mass of water m1=0.740 kg. The mass of ice m2=0.740 kg. The specific heat capacity of water c=1…

Q: The Curiosity rover landed on Mars on August​ 6, 2012, and is currently exploring the surface.…

A: Calculate the efficiency of the curiosity RTG.

Q: A 0.298-kg coffee mug is made from a material that has a specific heat capacity of 921 J/kg C° and…

A: The knowns in this problem are: mass of the coffee mug (m1) = 0.298 kg, specific heat capacity of…

Q: 3419 J of heat is added to a system and 2008 J of work is done by the system. What is the change in…

A: Given: Heat added ( Q) = 3419  J Work done (W) = 2008  J

Q: A cup of hot coffee sits on your desk. Assume that the thermal energy in the coffee can be converted…

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Q: An electric heater transfers 8.90 ✕ 105 J into a block of ice with a mass of 2.16 kg and an initial…

A: Let the mass of the ice be m, the heat supplied by the electric heater be Q, and the latent heat of…

Q: A 50 liter hot-water tank is used in the laundry service of a hospital clinic. The water in the tank…

A: Here given a 50 lit hot water tank. The heater operates at 200 v , and 8.2 A. The thermal resistance…

Q: I am very hungry, so I need to cook myself some ramen on the stove. I fill up a pot with 2 kg of…

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Q: c) The mass of copper block in grams

A: The initial temperature of the copper block in oven = 3900C The initial temperature of the copper…

Q: The heating element of a 1200 Watt electric stove can reach temperatures of 815 °C when turned all…

A: Heat required to boil water Q = mL L = latent heat of vaporization = 2260 KJ/kg

Q: A sample of 5.25 kilograms of water at 6.00°C is placed in the freezer. Assuming all energy removed…

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Q: A small electric immersion heater is used to heat 100 g of water for a cup of instant coffee. The…

A: The heater is used to heat 100 g of water, raising its temperature from 23 to 100o C. In doing so,…

Q: The power of an immersion heater is 50 kW. It is put into a boiling water. The heater remained…

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Q: A small electric immersion heater is used to heat 79 g of water for a cup of instant coffee. The…

A: Given: Mass of the water is m=79 g=79×10-3 kg The power is P=160 watt Initial temperature is TI=23°…