You can calculate the quantity of energy that a motor turns into heat
with either one of these equations:
Heat energy = ( 1 - efficiency of the motor) x (energy input to the motor)
or
Heat energy = ( 1 - efficiency of the motor) x (power input to the motor) x (running time)
Power = Energy/time 100W=Energy/360 Seconds Energy = 100/360 Energy ≈ 0.27 Joules
It just goes into the atmosphere surrounding the appliance. For example feel the air blowing out of a vacuum cleaner, it is warmer than the room temperature. This is energy which has been absorbed by the motor but appears as waste heat rather than the main function of the motor which is to provide an air flow through the machine.
I can convert various forms of energy into electrical energy.
Almost directly. Kinetic energy can be converted to thermal energy quickly by rubbing your hands together. You can convert thermal energy to kinetic energy by popping some popcorn. The efficiency of a kinetic machine like, for instance, a motor, is measured by how much heat it gives off. The hotter it gets, the more kinetic energy is lost as thermal energy and the less efficient the motor is.
7.9
A photocell converts light energy (radiant electromagnetic energy to be precise) into electrical energy. A thermocouple can convert heat into electrical energy. The radiant em conversion yields much more energy than a heat conversion.
Joules = watts x seconds. Just convert the minutes to seconds, then multiply.
To calculate the heat energy required, you can use the formula: Q = mcΔT, where Q is the heat energy, m is the mass of the copper (0.365 kg), c is the specific heat capacity of copper (0.0920 J/g°C), and ΔT is the change in temperature (60.0°C - 23.0°C). First, convert the mass to grams and then plug the values into the formula to find the heat energy required.
Not much is known yet about the Higgs Boson. The recently announced particle, which might be the Higgs boson, has a mass of about 125 GeV/c2; if you like, you can convert that to joules, to get the total energy. I assume that when such a particle decays, much of its mass will be converted to energy.
Multiply 75 kW by T hours of use = 75T kWh, which is how much energy the motor uses.
To convert 7 kilograms of ice at -9°C to water at 0°C, you need to calculate the energy required for each phase change. First, calculate the energy to raise the ice temperature from -9°C to 0°C using the specific heat capacity of ice. Then, calculate the energy required to melt the ice into water using the latent heat of fusion of ice. The total energy will be the sum of these two values.
Incandescent bulbs typically convert only about 10% of the energy they consume into visible light, while the remaining 90% is emitted as heat. The heat energy produced by an incandescent globe will depend on its power consumption, with higher-wattage bulbs producing more heat energy.