Which object in the following pair has greater total internal energy, assuming both objects in the pair are in thermal equilibrium? a 1kg block of ice at -25 degrees Celsius or seven 12g ice cubes at -25 degrees Celsius

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    Two objects A and B have the same mass and the same specific heat. Object A is heated from 30°C to 70°C and object B is cooled from 70°C to 30°C. How are the thermal energies of the two objects related after the temperature change has occurred? A. The

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    1) The kinetic energy of an object depends on which of the following? A. the object’s mass and direction B. the object’s speed and mass---------- C. the object’s work and direction D. the object’s speed and work 2) In the following situations,

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    Two objects are connected by a massless string as shown in the figure below. The pulley is massless and rotates without friction. The object of mass m = 1.7 kg slides without friction on an inclined plane which makes an angle of è = 38° with the

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  22. Physics

    Object A has mass mA = 9 kg and initial momentum A,i = < 19, -7, 0 > kg · m/s, just before it strikes object B, which has mass mB = 12 kg. Just before the collision object B has initial momentum B,i = < 5, 6, 0 > kg · m/s. Consider a system consisting of

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  24. chem please help drbob222

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  25. Child development

    Infants' naïve theory of physics leads them to believe that A.gravity is not important so floating objects are not unusual. b.one object striking a second object does not affect the second object. c.objects cannot move through other objects. objects move

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    a worker drives a .551 kg spike into a rail tie with a 2.55 kg sledgehammer. The hammer hits the spke with a speed of 62.1 m/s. if one fourth of the hammers kinetic energy is converted to the internal energy of the hammer and soike, how much does the total

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  28. science

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  29. Physics HELP!! pleasee

    an object on an inclined ramp of mass 1.39kg. The angle of the inclined surface is 29deg with the horizontal. The object on the ramp is connected to a second object of mass 2.17kg on a horizontal surface below an overhang that is formed by the inclined

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    Find the total change in the internal energy of a gas that is subjected to the following two-step process. In the first step the gas is made to go through isochoric heating until it gains 5963 J and its pressure is 3.12 105 Pa. In the second step it is

  31. Physics

    Find the total change in the internal energy of a gas that is subjected to the following two-step process. In the first step the gas is made to go through isochoric heating until it gains 5363 J and its pressure is 2.92 105 Pa. In the second step it is

  32. Physical Science

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  33. Science

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  34. Physics "Momentum of impact"

    1. Which mathematical representation correctly identifies impulse? A. implulse= force/time B. impulse= force * time C. impulse= acceleration * time D. impulse= velocity/time 2. In a closed system, a ball with a mass of 3 kg and a momentum of 24 kg·m/s

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  37. Physics

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  38. Statistics

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  40. science

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  44. Physics -- check answers please

    1. In moving an object of mass 10 kg through a distance of 8.0 m, 40 J of work is done. The average force exerted is? my answer: 320N 2. What is the kinetic energy of a 20 kg object moving at a speed of 10 m/s? my answer: 1000J 3. the gravitational

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  51. Physics,,,,,,,How do I solve this?

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  52. physics

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  57. Physics (The moment of Impact)

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  58. Physics

    A worker drives a 0.460 kg spike into a rail tie with a 2.16 kg sledgehammer. The hammer hits the spike with a speed of 64.5 m/s. If one third of the hammer’s kinetic en- ergy is converted to the internal energy of the hammer and spike, how much does the

  59. physics

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  60. Physics

    Which object in the following pair has greater total internal energy, assuming both objects in the pair are in thermal equilibrium? a 1kg block of ice at -25 degrees Celsius or seven 12g ice cubes at -25 degrees Celsius

  61. science

    A scientist experiments on two different pairs of objects. During the experiment, the objects in one of the pairs are brought into contact with each other; the objects in the other pair are brought close together, but they do not touch. The scientist then

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  70. Child development

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    an object on an inclined ramp of mass 1.39kg. The angle of the inclined surface is 29deg with the horizontal. The object on the ramp is connected to a second object of mass 2.17kg on a horizontal surface below an overhang that is formed by the inclined

  85. Physics

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  86. Physics-check answer please (multiple choice)

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  91. Physics

    Imagine a right-angle triangle with angle θ = 40o on the left. The serves as an increasing slope. On the slope is an object of mass m1= 340 g on an inclined surface. The angle of the inclined surface is θ = 40o with the horizontal. The object m1 is

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