0
Is it meaningful to say that an object at a temperature of 200 degree Celsius is twice as hot as one at 100 degree Celsius?
Wiki User
∙ 14y ago
Not really. It would be better to say that it is 100 degees hotter than the other.
After all, what if one object was zero degrees - such as frozen water - and another object was "twice as cold". What temperature would that be?
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoNo, it would not because the 0°C does not show the amount of heat. First convert to Kelvin by adding 273.15°C and then compare. The Kelvin scale is an absolute scale. 473.15 is not twice as hot as 373.15, but is about 4/3 hotter. ■
Wiki User
∙ 8y agoYou can make the statement but you have to qualify what you mean. Many people would consider a day that is at 100 °F to be "twice as hot" as a day at 50 °F. In a way they are correct since 100 is twice 50 - but from a thermodynamic standpoint the statement would not be correct. The temperature scale chosen is arbitrary. If °C were chosen instead, the cooler day would be at 10 °C and the warmer one at about 37.8 °C. Clearly 37.8 is not the same as twice 10, yet conditions are the same. The situation becomes even more obvious when we consider negative temperatures. What temperature would be "twice as hot" as -15 °C?
To improve the correctness of the statement, the temperatures would need to be given on an absolute scale such as K or °R. To further improve, the bodies should be identical in composition and size. If you had two spheres of pure iron, both of exactly radius 10 cm, and one was at 200 K and the other at 400 K, it would then make sense to say that the one at 400 K is "twice as hot" as the one at 200 K.
Add your answer:
Earn +20 pts
What si unit you use to mesure temperature of an object?
The basic unit is Kelvin but you are more likely to use a Celsius degree. The measurement unit is the same but, whereas the Kelvin scale is absolute (it has a meaningful 0 point), the 0 on the Celsius scale is arbitrary.
If 50 grams of a substance with a temp of 20 degree Celsius and specific heat of 2 is mixed with 200 grams of water with a temperature of 40 degree Celsius what will be the equilibrium temperature of?
Heat gained by one object has to equal the heat lost by the other object. The final temperature of the two objects will be the same.Object 1:mass1 = 50 ginitial T1 = 20 oCCg = 2 J/degree/gramfinal T1 = TfChange in temperature = Tf - T1Q = Cg x change in T x mass= 2 x ( Tf - T1 ) x 50Water:Mass = 200 gCg = 4.18 J/ degree/ gramChange in T = Tf - 40Q = 4.18 x (Tf - 40) x 2004.18 x (Tf - 40) x 200 = -(2 x ( Tf - 20 ) x 50)Tf = 37.9 oC
How much heat is required to change the temperature of two cups of water (500mL) from room temperature (25c) to boiling?
1 cal per degree per ml.
How can the specific heat of water be used to determine the specific heat of an object?
If you know the temperature and mass of an object, and the temperature, mass, and specific heat of the water, if you dunk the object in the water, and measure the temperature of the water and the object (once the object and water have the same temperature), using reasoning skills and/or equations you can figure out the specific heat of the object. Historically the specific heat was related to SH of water . Water being 1 That now is seen as archaic. The specific heat (of a substance) is the amount of heat per unit mass required to raise the temperature by one degree Celsius. This does not apply if a phase change is encountered. Every substance has to be measured separately .
If something has a density of one will it sink or float?
You don't have enough information for a substantive answer.
What si unit you use to mesure temperature of an object?
The basic unit is Kelvin but you are more likely to use a Celsius degree. The measurement unit is the same but, whereas the Kelvin scale is absolute (it has a meaningful 0 point), the 0 on the Celsius scale is arbitrary.
Is degree celsius a unit of mass?
Because every object has mass but the metric unit of measure is grams
Does the temperature indicates a degree of hotness or coldness of an object?
Temperature indicates both a degree of hotness and coldness of an object
What will happen if an object with a temperature of fifty degrees Celsius contracts an object with a temperature of seventy degrees Celsius?
Heat will flow from the warmer to the cooler body. The object at 70º will cool down and the object at 50º will warm up.
Which temperature is always larger - an object's Celsius temperature or its kelvin temperature?
The objects Kelvin temperature. The Kelvin scale starts at absolute zero (-273 degrees Celsius)
Which is larger an object's celsius temperature or it's kelvin temperature?
Its Kelvin temperature. The Kelvin scale starts at absolute zero and goes up. Absolute zero on the celsius scale is -273.15oC
When you measure the temperature of an object. you are measuring the?
The temperature, in degrees in Fahrenheit or Celsius. In other words temperature is a physical property of a procedure that describes hot and cold.
How long does it take to increase one degree Celsius in temperature?
That depends on the material or substance or object being heated, the heat source, the current temperature of each, the specific heat capacities of each, and several other factors. There is no rate that works in general.
What is the amount of energy needed to change the temp of a substance called?
The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius
How is temperature is measured?
Temperature is usually measured with a thermometer which tells you how many degrees Celsius or Fahrenheit the temperature is (Fahrenheit is the American measure and Celsius is what everyone else uses)
What is the measurement of how hot or cold one thing is and the energy it contains?
The measurement of how hot an object is and thus how much thermal energy an object has is called temperature. It is measured in oC, oF or K, which stand for degrees Celsius (often mistakenly called centigrade), degrees Fahrenheit and Kelvin. The Kelvin scale is the universal scale of temperature, and begins with zero at absolute zero, the temperature below which an object cannot fall as it then has no energy. The Celsius scale is exactly the same scale as Kelvin, but begins with zero at water's freezing point and 100 at its boiling point. Therefore, a measurement in Celsius is 273 below one at Kelvin (0oC = 273K). The Fahrenheit scale is a different scale to the other two. One degree Fahrenheit is five ninths the size of one degree celsius, and the freezing point of water is 32oF. oC = 9/5 x (oF - 32)
What are the similarities and differences between heat and temperature?
Heat is defined as the total kinetic energy of all the atoms and molecules that make up a substance.Temperature is a measure of the average kinetic energy of the individual atoms or molecules in a substance.
