14500 kg tractor trailer travels up and down a 75-meter hill on its way to pick up a load of lumber weighing 26000 kg. it then turns around and makes the trip back along the same route. Upon descending the hill in either direction the brakes absorb 20% of the truck’s energy. What would the increase in temperature of the brakes be in each direction? (brake mass = 215kg, brake specific heat = 1100 J/kgC)

Q: A 20,000 kgkg subway train initially traveling at 18.5 m/sm/s slows to a stop in a station and then…

A: In this question we have to find the rise in temperature. Please give positive feedback if the…

Q: In an electrically heated home, the temperature of the ground in contact with a concrete basement…

A: Step 1:Step 2:

Q: A 5 gram lead bullet traveling in 20°C air at 300 m/s strikes a flat steel plate and stops. What is…

A:

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

A:

Q: A coffee-cup calorimeter contains 55.0 g of water at 25.90° C. If 4.21 g gold metal at 89.20° C is…

A: Given that  mw=55 g                    mg=4.21g                    Tw=25.90 o C…

Q: A beaker of negligible heat capacity contains 456 g of ice at -25.0°C. A lab technician begins to…

A: The beaker initially contains 456 grams of ice, at -25 C. Water converts into ice as soon as the…

Q: An ice tray is removed from a freezer, where the ice was at a temperature of -12°C, and left on a…

A:

Q: During a bout with the flu an 980-kg man ran a fever of 39.0° C instead of the normal body…

A:

Q: The world's most active volcanoes, such as the Kilauea volcano in Hawaii, can disgorge about 5 ✕ 105…

A: Given: The volume of the lava is 5×105 m3. The initial temperature of the lava is 1025 °C. The final…

Q: A 56 kW electric furnace measures 1.2m x 1.3m x 0.7m. When the temperature inside the furnace is…

A:

Q: Radioactive decay of granite and other rocks in Earth's interior provides sufficient energy to keep…

A: Given:The average release of heat per year is, Havg=0.03 J/kg.yearSpecific heat capacity, c=800…

Q: A 0.310 kg aluminum bowl holding 0.805 kg of soup at 25.0\deg C is placed in a freezer. What is the…

A: Given:mass of aluminium, m= 0.310 kg mass of soup,m' = 0.805 kg initial temperature, T = 25 degree C…

Q: According to the USDA, an average, \moderately active" college student needs to eat 2500 calories…

A:

Q: Two 54 g ice cubes are dropped into 450 g of water in a thermally insulated container. If the water…

A: Given data: The mass of the ice cube is m1=54 g=0.054 kg. The mass of the water is m2=450 g=0.450…

Q: A child running a temperature of 101°F is given an antipyrin (i.e. medicine that lowers fever) which…

A:

Q: The average thermal conductivity of the walls (including windows) and roof of a house in the figure…

A: The area of the side walls can be written as A1=2ls·hA1=210.0 m5.00 mA1=100 m2…

Q: For the human body, what is the rate of heat transfer by conduction through the body’s tissue with…

A: Given, Thickness, d=3 cm=0.03 m, Area, A=1.50 m2, temperature change, ∆T=2.00 C, Energy intake,…

Q: Consider a wood wall with a cross-sectional area of 40 m2 and a thickness of 50 mm. The thermal…

A: The rate Pcond at which energy is conducted through a slab for which one face is maintained at the…

Q: A 0.52 kg hammer strikes a 28 g copper nail into a wood board. The nail is horizontally aligned and…

A:

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

A:

Q: Initially you have mwater=4.2kg of water at Twater=66 degrees celcius in a insulated container. You…

A: Recall Q=mc∆T Also, principle of calorimetry. Heat lost by hotter body=heat gained by colder body

Q: Rita, Frank, and Greg have a total of $118 in their wallets. Frank has $8 more than Rita. Greg has 4…

A: Consider, Rita has x dollars in the wallet, Frank has y dollars in the wallet, and Greg has z…

Q: When a driver brakes an automobile, the friction between the brake drums and the brake shoes…

A: From conservation of work energy,

Q: The temperatures shown in the figure have been determined via 2-dimensional finite difference…

A:

Q: How much heat transfer is required to raise the temperature of a 800 g aluminum pot containing 2000…

A: Given data: Mass of aluminum (mAl) = 800 g Mass of water (mw) = 2000 g Initial temperature of the…

Q: One way to keep the contents of a garage from becoming too cold on a night when a severe subfreezing…

A:

Q: You are heating 310 mL of water to make tea; however, you forget the pot on the stove, and all of…

A: The specific heat (C) and latent heat (L) of a substance of mass (m) that absorbs heat (Q) and its…

Q: A sphere of surface area 1.25 m² and emissivity 1.0 is at a temperature of 100°C. At what rate does…

A: The surface area of the sphere is 1.25 m2.The emissivity is 1.The temperature of the sphere is…

Q: A closed box is filled with dry ice at a temperature of -86.0 °C, while the outside temperature is…

A: Step 1:Step 2: Step 3: Step 4:

Q: In an electrically heated home, the temperature of the ground in contact with a concrete basement…

A:

Q: A block of 10.0 kg of solid gold at its melting point of 1,063.00°C changes phase to liquid gold at…

A: SOlution: Given that m = 10 kg L =  6.44×104 J/kg

Q: Q1 a) The hot combustion gases of a furnace are separated from the ambient air and its surroundings,…

A: Consider the given data as below. Thermal conductivity, k=1.2 Wm·K Convection coefficient, h=20…

Q: You have 4.9 kg of water in an insulated container. You add 0.95 kg of ice at -21 °C to the water…

A:

Q: A 10 kg box is hit by a truck and slides across the concrete. After being hit by the truck the box…

A: Heat gained by the box is same as the kinetic energy lost, then the specific heat of box is

Q: A 25,000 kg subway train initially traveling at 15.5 m/s slows to a stop in a station and the stays…

A: In this question we are given that a 25,000 kg subway train initially traveling at 15.5 m/s slows to…

Q: An ice tray is removed from a freezer, where the ice was at a temperature of -11°C, and left on a…

A: Change of phase is represented as, Q=Q1+Q2+Q3=mci∆Ti+mLi+mcw∆Tw

Q: A 2.80-kg steel ball at 24.7°C is dropped from a height of 15.4 m into an insulated container with…

A: mass of steel ball ms= 2.80kg temperature of steel ball is Ts= 24.7o C height of the ball h = 15.4 m…

Q: You drop an ice cube into an insulated bottle full of water and wait for the ice cube to completely…

A: Given data: Mass of ice is, m=70 g =0.07 kg. Initial temperature of ice is, T1=0∘C =273+0 =273 K.…

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

A: Q =mc(∆T) =(0.9)(4.186)(25-0) = 94.185 kJ = 94185 J

Q: A parcel of air with a volume of 9.3 x 10 km that contains 4.8 x 10 kg of water vapor rises to an…

A: The total amount of heat required for all the water in the parcel condense and then freeze,…

Human Metabolism

Being described as the most complicated machine ever encountered by humans, the human body and the cell metabolism is nothing less than a wonder. Metabolism is the set of life-sustaining chemical reactions within organisms.