Which of the following units can be used to measure heat? Choose all that apply.
°C
cal
K
kW
kg m2/s2
kg m/s2
°F
m/s2
J/s
J
calories, Joules and basic units making up those. A joule is force*distance, or N*m or kg*m^2/sec^2
Cal, Kg m^2/s^2, J
The units that can be used to measure heat are:
- °C (degrees Celsius)
- cal (calories)
- K (Kelvin)
- J/s (Joules per second)
- J (Joules)
To determine which units can be used to measure heat, we need to understand the different units of heat and their definitions. Here are the options provided:
1. °C: This unit measures temperature and not heat. The Celsius scale is commonly used to measure temperature but does not directly measure heat.
2. cal: The calorie (cal) is a unit of measurement for heat. It is defined as the amount of heat required to raise the temperature of 1 gram of water by 1 degree Celsius. Therefore, cal can be used to measure heat.
3. K: The Kelvin (K) is the SI unit of temperature and is often used in scientific calculations. While it does not measure heat directly, it can be used in conjunction with other units to measure heat.
4. kW: Kilowatt (kW) is a unit of power, which measures the rate at which work is done or energy is transferred. It is not a direct measure of heat but can be used to express a power output such as in heating systems.
5. kg m2/s2: This unit represents the joule (J), which is the SI unit of energy. While it does measure energy, which can be related to heat, it is not a specific unit of heat.
6. kg m/s2: This unit represents the newton (N), which is the SI unit of force. It does not directly measure heat.
7. °F: Similar to °C, Fahrenheit (°F) is a scale used to measure temperature and not heat.
8. m/s2: This unit represents acceleration and does not directly measure heat.
9. J/s: This unit represents power, specifically the watt (W). While power is related to heat, J/s does not specifically measure heat.
10. J: The joule (J) is the SI unit of energy and can be used to measure heat. It is a direct unit of heat measurement.
Based on these explanations, the units that can be used to measure heat are cal, J, and K.