Q: By how much does the volume of an aluminum cube 5 cm on an edge increase when the cube is heated…
A: By the formula of the volumetric expansion ∆V = V γ∆T where, V is the original volume, γ is the…
Q: What is the mass of ice at -7 0C needed to cool 6.51 x 10-4 m3 water from 20 0C to 3.4 0C.
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Q: How much heat is required to melt 0.040 kg of ice at 0° C and then raise the tem perature of the…
A: Mass of ice = 0.040 kg initial temperature of ice = 0 degree celsius final temperature of melted…
Q: How much heat energy is required to heat a 50 grams of ice at -10.5° C to 374°F?
A: Given Mass of ice m = 50 g Initial temperature Ti = -10.5°C Tf = 374° F To find Heat energy…
Q: How much energy is required to raise the temperature of 1.9 kg of ice at -35.°C to water at 62.°C?
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Q: 4kJ of energy is applied to an aluminum rod of unknown mass. Its temperature goes from 20∘C to 45∘C.…
A:
Q: After the 1 kg block of ice melts, the amount of heat required to raise its temperature to 10°C is…
A: Given, Mass of melted ice(water), m= 1kg, increase in temperature, ∆T=100 C=283.15 K.
Q: The temperature of 100 g of water is to be raised from 10 c to 90 c. The energy needed to do this is…
A: Given data: Mass m =100g Temperature T1=10°C Temperature T2=90°C
Q: The statue of liberty is 93m tall on a summer morning when the temperature is 20°C. If the…
A:
Q: How much heat Q, in Joules, is required to warm up 0.5 kg of water from 20 °C to 30 °C ? (Water…
A:
Q: An iron beam is heated to 38 C on a hot summer day, and then cools to 18 C overnight. It experiences…
A: The thermal energy of the obtained by the iron beam is, Q=mc∆Tm=Qc∆T=QcTf-Ti
Q: if the temperature of an object is changed by 20°C, what is the corresponding change in kelvin?
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Q: The thermal energy in 8.0 kg of water at 30°C increases by 8000 J. What is its new temperature?
A:
Q: A tennis ball bounces on the floor three times. If each time it loses 23.0% of its energy due to…
A: The ball loses 23% of the total energy in form of heat after every bounce. Therefore, the remaining…
Q: A sample of gaseous krypton is heated with an electrical coil. If 39.5 Joules of energy are added to…
A: Given: Energy added, E = 39.5 joule Mass, m = 11.5 g Initial temperature, Ti = 23 °C = 296 K
Q: How much energy is required to completely melt 50 kg of ice that has an initial temperature of -10…
A: mass of ice = 50 kg Initial temperature of ice = - 10 C specific heat of ice = 2108 J/kg-C latent…
Q: How much energy is required to raise the temperature of 4.1 kg of ice at -40.°C to water at 68.°C?…
A:
Q: A freshly brewed cup of coffee has temperature 95°C in a 20°C room. When its temperature is 63°C, it…
A: the rate of cooling is 1 degree celcius,the expression for the newton's law of cooling is,
Q: Andy has a bath and uses 1500g of water heated from 10°C to 40°C and with a specific heat capacity…
A: Write the given data. m=1500 g=1.5 kg∆T=40-10=30 °CC=4200 J/kg°C
Q: A body cools from 80 °C to 50 °C in 5 minutes. Calculate the time it takes to cool from 60 °C to 30…
A: Newton’s law of cooling gives,
Q: How much energy does it take to raise the temperature of 6.5 pounds of water from 68 deg. F to 212…
A:
Q: The temperature of 1000 g of water is to be raised from 20 °C to 80 °C. The energy needed to do…
A:
Q: The amount of heat required for melting the ice of mass 1.3 kg at -10 °C is
A: The specific heat of ice below zero degree (c) is 2093 J/Kg.K. Latent heat of the ice (L) is 334000…
Q: What is the mass of a cubic meter of air at room temperature (20°C)?
A:
Q: At 20∘C, a brass cube has an edge length of 25 cm. What is the increase in cube's surface area when…
A:
Q: How much heat must be removed when 50 grams of steam at 100°C Is condensed to form liquid water at…
A:
Q: How much energy does a freezer have to remove from 1.5 kg of water at 20° C to make ice (at 0° C)?
A: Given that mass of the water to be converted in ice and initial temperature of water and also given…
Q: Other things being equal, what would the earth's average temperature have been historically (before…
A:
Q: How much heat is required to convert ice with a mass of 12.0g at an initial temperature of -10.0°C…
A: For heating ice from -10oC to 0oC : The heat required is Q1=mc∆TQ1=12(2.1)(0-(-10))Q1=252 J
Q: An 1800 kw electric resistance heater is immersed in 40 kg of water at 20o C. How long will it take…
A: Given: P = 1800 kW mass, m = 40 kg T1 = 20o C T2 = 80∘C
Q: How much heat is required to warm 2.7 kg of sand from 40 °C to 120 °C?
A: Given: m = 2.7 kg T1 = 40 °C T2 = 120 °C c = 4200 J/kg C
Q: A bowl of cubes was added to a pitcher of water and the water in the pitcher cooled by 45.0°C. If…
A:
Q: The heat of fusion of water is 334 J/g. How much energy is required to melt 50 grams of ice into…
A:
Q: An aluminum rod is 20.0 cm long at 20°C and has a mass of 350 g. If 10 000 J of energy is added to…
A:
Q: A tennis ball bounces on the floor three times. If each time it loses 22.0% of its energy due to…
A: Total energy = 1 unit Balance after first collision = 0.78 unit Balance after second collision =…
Q: )What mass of water at 100°C is to be added to 5kg of water at 10°C to prepare bath at 30°C ?
A:
Q: How much energy is required to raise the temperature of 3.5 kg of ice at -31.°C to water at 57.°C?
A:
Q: What is the amount of thermal energy to raise the temperature (300g) of aluminum from (15°C) to…
A: Given Mass of aluminum is m=0.300 kg Change in temperature is…
Q: A 220 J of energy is required to raise the temperature of the temperature of aluminum from 15°C to…
A:
Q: How much heat is removed from each kilogram of steam at 110 C to turn it into water at 85 C?
A:
Q: 3. A 2.50-L volume of hydrogen measured at -196 °C is warmed to 100 °C. Calculate the volume of the…
A: for constant volume, we have the relation V1T1=V2T2
Q: 2,2 A 50 g silver disk at 300°C is placed in 200 cm' of methyl alcohol at 14°C, then removed…
A:
Q: using newton's law of cooling, if a cup of coffee cools from 85C in 2 minutes in room temperature…
A:
Q: How much heat is needed to change 2 kg of ice at -10°C to steam at 100°C?
A: Heat required is given by: Q = Q1 + Q2 + Q3 + Q4 Q1 = Heat required from -10 C ice to 0 C ice Q2 =…
Q: How much energy, in J, is needed to cool a 0.2 kg cup of water from 25 oC down to 15 oC?
A: The heat energy required to cool a cup of water is, Q=mc∆T=mcTf-Ti The specific heat capacity of…
Q: One liter of a certain gas is heated from 250C to 1000C. What is the final volume?β= 950 x10-6/°C
A: Given Vo = 1L Ti = 250°C Tf = 1000° C β= 950 x10-6 /°C ( 'β' is the coefficient volume of…
Q: How much energy is required to raise the temperature of 0.25 kg of water from 20.°C to 80.°C? Answer…
A:
Q: A pan filled with hot food cools from 94 °C to 86 °C in 2 minutes when the room temperature is at 20…
A: Accroding to the newton’s law of cooling,
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- At time t = 0 s, a motor begins to move a small elevator of mass 117 kg by unreeling a cable. The position of theelevator as a function of time is given byy(t) = yie^(−t/t0)where yi = 87 m and t0 = 1.77 s and we have defined up to be the positive y direction. What is the tension in theelevator cable at time t = 3.26 s?A box of mass 15.7 kg slides down an inclined plane without friction. If the acceleration, a, of the box along the direction of the plane is 4.1 m/s2, what is the angle θ (in degrees) of the plane with respect to the horizontal?A block is being pulled by a rope up the surface of an inclined plane at constant velocity. Which of the following is true of the tension in the rope T, the force due to friction Ff, and the component of the block’s weight parallel to the plane wp?
- A student, crazed by final exams, uses a force of magnitude 80 N and angle u =70 to push a 5.0 kg block across the ceiling of his room ). If the coefficient of kinetic friction between the block and the ceiling is 0.40, what is the magnitude of the block’s acceleration?A 82.2-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with an acceleration of 1.92 m/s2, (b) moving upward at a constant speed, and (c) accelerating downward with an acceleration of 1.44 m/s2?The coefficient of static friction between block A and a horizontal floor is 0.470, and the coefficient of static friction between block B and the floor is 0.300. The mass of each block is 2.00 kg, and they are connected together by a cord. If the horizonta force F pulling on block B slowly increased, in a direction parallel to the connecting cord, until the blocks start sliding, what is the magnitude of F at the instant that they start to slide?
- A magnet of mass 4.72 kg is suspended from the ceiling by a cord as shown. A large magnet is somewhere off to the right, pulling on the small hanging magnet with a constant force of F = 57.1 N. At what angle theta ?with respect to the vertical does the magnet hang?A 14.9 kg is being dragged by a horizontal type to the left, while slowing down from 46 m/s to 6.1 m/s over 1.2 seconds. If the tension in the rope is 37.9 N, then what is the coefficient of friction for the fictional force acting on the sled?An inclined plane makes an angle of 30o with the horizontal. Neglecting friction forces, find the constant force, applied parallel to the plane, required to cause a 15-kg box to speed up, moving up the plane with acceleration 1.2 m/s2 and down the incline with acceleration 1.2 m /s2?
- An elevator weighing 5.8 KN is ascending with an acceleration of 3m/s2. The operator is standing on a scale inside the elevator and during ascension the scale registers 910 N. What is the true weight of the operator in kg and the tension in the supporting cable?the coefficient of static friction between block A and a horizontal floor is 0.320, and the coefficient of static friction between block B and the floor is 0.300. The mass of each block is 2.00kg,and they are connected together by a cord. If a horizontal force F pulling on block B is slowly increased ,in a direction parallel to the connectin cord,until the block start sliding ,what is the magnitude of F at the instant that they start to slide?There is a particle with mass m = 2 kg attached to a smooth wire that is positioned horizontally so that the particle can only move freely in the horizontal direction. The particle initially moves with a constant velocity V0, = 7 m/s to the right, which is then pulled by a constant force at an angle that varies with time as shown below. If the function of the angle is θ(t) = 0.2t +0.3, where is calculated in radians and t is in seconds, and the magnitude of the constant force is F = 10 N. then calculate: (Review only for 0.3≤θ≤? ) a. The time it takes for the particle to reach its maximum acceleration! b. The velocity of the particle when the force is exactly on the vertical axis!)