A: chemical
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A lamp connected to a 12V supply converts energy at a rate of 36 W. How much energy will be converted in 10s?
The diagram shows a girl lifting a box of weight 50 N from a low shelf to a high shelf. How much work is done on the …
The diagram shows the energy transfer through a machine. The machine is 50% efficient. Which equation is correct?
A hot liquid is allowed to cool. The graph shows the cooling curve. In which part of the curve is latent heat released?
For the same temperature rise and the same original volume, which of the three states of matter expands the most and …
The speed of radio waves is c. A radio station transmits waves with a wavelength λ. What is the frequency of the tran…