What kind of energy do u use for cooking and heating

2 answers:

6 0

Thermal energy is used to cook food. Thermal energy is heat. It's converted from either electrical potential energy or chemical potential energy, depending on the cooking appliance. An electric stove converts electric potential energy to thermal energy.

cricket20 [7]3 years ago

3 0

I believe gas, however some use electricity for that.

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93 cm3 liquid has a mass of 77 g. When calculating its density what is the appropriate number of significant figures

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Answer:

828 kg/m³ or 0.828 g/cm³

Explanation:

Applying,

D = m/V............. Equation 1

Where D = density of the liquid, m = mass of the liquid, V = volume of the liquid.

From the question,

Given: m = 77 g , V = 93 cm³

Substitute these values into equation 1

D = 77/93

D = 0.828 g/cm³

Converting to kg/m³

D = 828 kg/m³

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Answer:

v = 38.9 m/s

Explanation: