Question

1.Каким способом изменялась внутренняя энергия детали при сверлении в ней отверстия. Варианты ответов:1)совершением работы.2)теплопередачей.3)совершением работы и теплоперачей.2.количество теплоты зависит:Врианты ответов:1)масы тела и его температуры.2)от рода вещества,из которого изготовлено тело и массы тела.3)от масы тела,начальной и конченой температур тела,рода вещества.3.как называется величина показывающая,какое количество теплоты необходимо для нагревания 1 кг железа на 1 градус ..Варианты ответов:1)внутреняя энергия.2)количество теплоты.3)удельная теплоёмкость вещества. 4.какова масса железной детали,если на её нагревание от 20 градусов до 200 градусов ,потребовалось 20,7 кДж теплоты*?5)Вода массой 150 г.имеет температуру 10 градусов.Найти температуру воды после того,как в неё опустили железную деталь массой 0,5 кг,имеющую температуру100 градусов.ПОМОГИТЕ ПОЖАЛУЙСТА!ЕСЛИ ЗНАЕТЕ ХОТЯБЫ НА КАКОЙ ТО ВОПРОС ОТВЕТ!!!!!!!!!ФИЗИКА.8 КЛАСС

Answer 1

в первом 3 во втором 1 в 3 1

Answer 2

How does the internal energy of a part change when drilling a hole in it?

When drilling a hole in a part, the internal energy of the part changes primarily due to work done and heat transfer. The drilling process involves the application of a force to the drill bit, which results in the drilling of the hole. This work done by the drill bit on the part increases the internal energy of the part. Additionally, the drilling process generates heat due to friction between the drill bit and the part, resulting in heat transfer from the drill bit to the part. This heat transfer also contributes to the change in the internal energy of the part [[1]].

What does the amount of heat depend on?

The amount of heat transferred to a body depends on several factors, including: 1. Mass of the body: The greater the mass of the body, the more heat is required to raise its temperature. 2. Initial and final temperatures of the body: The temperature difference between the initial and final states of the body determines the amount of heat transferred. 3. Nature of the substance: Different substances have different heat capacities, which affect the amount of heat required to raise their temperature. Heat capacity is the amount of heat required to raise the temperature of a substance by one degree Celsius or one Kelvin. Therefore, the amount of heat transferred depends on the mass of the body and its initial and final temperatures, as well as the nature of the substance it is made of [[2]].

What is the term for the quantity of heat required to raise the temperature of 1 kg of iron by 1 degree?

The term for the quantity of heat required to raise the temperature of 1 kg of a substance by 1 degree is called the specific heat capacity of the substance. In this case, the specific heat capacity of iron is the quantity of heat required to raise the temperature of 1 kg of iron by 1 degree Celsius or 1 Kelvin. Therefore, the correct answer is specific heat capacity of the substance [[3]].

How can we calculate the mass of