50. Rubbing your hands together requires 450 J of energy and results in a thermal energy increase in your palms of 153 J. Calculate how efficiently the kinetic energy is converted to thermal energy.
Q: During a workout, a person repeatedly lifts a 16-lb bar- bell through a distance of 1.1 ft. How many…
A:
Q: 4. Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel.…
A:
Q: Which of the following is true for an object falling to the ground with constant velocity? I.…
A:
Q: 19. Water is heated in an open pan where the air pressure is one atmosphere. The water remains a…
A:
Q: Suppose 9.20 x 105 J of energy are transferred to 2.04 kg of ice at 0°C. The latent heat of fusion…
A: Emelt=mLf=2.04 kg3.33×105 J/kg=6.79×105 J
Q: 8. It takes 679 J of energy to raise the temperature of 132.6 g of mercury from 20.0°C to 68.9°C.…
A:
Q: In a certain thermodynamic process, 20 cal of heat are removed from a system and 30 cal of work are…
A:
Q: Heat is added to a substance. Is it safe to conclude that the temperature of the substance will…
A: Heat added to any matter could lead to a change, in the temperature of the matter or in the state of…
Q: ***************** A combination of 0.250 kg of water at 20.0°C, 0.400 kg of aluminum at 26.0°C, and…
A:
Q: A moveable piston of a closed container containing an ideal gas is lifted to 3 m after it is heated…
A: Energy by piston = 3.5 ×3=10.5 J
Q: 2. The brakes in a car increase in temperature by ΔT when bringing the car to rest from a speed v.…
A: In this problem, part b is not the part of the question but it is the suggestion. (a) Write the…
Q: 3. A typical tablet battery recharger provides 10 Watts of power. 60% of this power is converted to…
A: Power of recharger (P) = 10 Watt Percentage of power , which get converted to chemical potential…
Q: Heat(Q) depends on ..............choose one correct answer A. Mass of the objects, change in…
A: The specific heat is the measure of heat per unit mass required to increase the temperature by one…
Q: 33. For a heat engine, if the high temperature end Th= 400 C, what must be the low temperature end…
A:
Q: TRUE OR FALSE. Why? 1. Heat flows SPONTANEOUSLY from hot objects to cold objects and vice versa, as…
A: Step1: Overview The heat flows spontaneously from hot objects to cold objects i.e from high…
Q: Your body is like an "oven" set to 98 degrees F or 37 degrees C. Questions 6-8 are related to this…
A: Our body is at 370 C which is at a higher temperature than the atmospheric temperature.
Q: engine does 12 kJ of work and 7.50 kJ of heat transfer occurs to the environment in a cyclical pro
A: Givenwork. W=12 kJHeat transfer to environment, Q1=7.5 kJ
Q: You want to heat your oven to 400°F. Given that your oven has a surface area of 1m2, about how much…
A: Given Surface area of oven(A)= 1 m2 Temperature of oven (T) = 400°F We want to calculate power…
Q: 3. Suppose that 150 J of work is done on a system and 35.0 cal is extracted from the system as heat.…
A:
Q: thermal energy can be transferred
A: It is a such a beautiful experiment to conduct. Convection is the movement of heat by a fluid such…
Q: An automobile with mass 2000 kg is traveling at 20 m/sec. How much heat is developed in the brakes…
A: Given, mass of automobile m= 2000kg , speed v = 20m/s
Q: a mental patient keeps pushing against the wall for a long time. does this generate heat? 1. only…
A: ANS. 1 and 3
Q: A 54-woman eats a 450 Calorie hamburger for snacks. How many joules of energy is the equivalent of…
A: Given that, Mass of a woman, m = 54 kg She eats 450 Calorie hamburger for snacks. We need to find…
Q: On a typical day 654 men seps for 85h, does light chuss for 2.0h, waks Use any necessary date MO
A: Given: m=65 Kg tsleep=8.5 h tlight=2 h twalk=1.1 h tjpg=0.2 h To find the change in internal energy.
Q: An airplane's jet engine is what kind of heat engine? O a. External O b. Both Oc. Internal O d.…
A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…
Q: A PHYS 1510 student was working on a robotics project. The joints on the machine they were building…
A:
Q: The temperature of water in a swimming pool decreases by 5.0 K during the night. The mass of the…
A: Given, The temperature of water decreases by 5 k mass of water in the pool is 560,000 kg specific…
Q: 5. An aviation fuel used by a piston engine aircraft transforms 100,042 J of energy through the…
A: Energy produced by aviation fuel ( Input energy) = 100042 JHeat produced by vapourization = 46721…
Q: 8. A 900-kg roller coaster car paused at a vertical height of 50 m on the ride's second hill. If it…
A: According to the law of conservation of energy, energy cannot be created. It simply alters its…
Q: How much heat transfer occurs from a system, if its internal energy decreased by 150 J while it was…
A: Given: Internal Energy (△U) = - 150 Joule Net work done ( W) = 30 Joule
Q: 12. A block is pushed up a rough ramp, at constant speed, by a force that is parallel to the ramp…
A:
Q: 119. As a thrown baseball is acted on by air friction, the thermal energy of the ball (1) decreases…
A: Kinetic energy decreases over time as frictional force due to air acts on it.
Q: 25) In a flask, 114.0 g of water is heated using 67.0 W of power, with perfect efficiency. How long…
A:
Q: Modified Multiple Choice. Write the letter of the best option and provide an explanation on your…
A: Given statement : efficiency of heat engine = 75%
Q: Question 20 Which of the following is a reliable investigation to study how heat is transferred by…
A: Conduction plays a role in temperature regulation in living organisms. When the temperature of the…
Q: Substance A has a higher specific heat than substance B. With all other factors equal, which…
A:
Q: Substance A has a higher specific heat than substance B. If all other factors are equal, which…
A:
Q: 23. Some amount of energy is transferred by heat into a system. The net work done by the system is…
A: given data networkdone (dw) = 50 J internal energy (du) = 30 J amount of net heat =?
Q: Q38. Q38. How much energy does a 150 W steam iron consume per second? O 15 W O 15 J O 150 J O 0.15 J
A: Answer 150 J
Q: 8. Calculate the efficiency of a fossil-fuel power plant that consumes 382 metric tons of coal each…
A:
Q: A heat exchanger is used to heat cold water at 15°C entering at a rate of 2 kg/s by hot air at 85°C…
A: The mass flow rate of cold water m˙cw=2 kg/s Inlet temperatures of cold water T1=150CHeat lost from…
Step by step
Solved in 2 steps with 1 images
