Physics, 16.10.2020 14:01 gtamods402
a piece of aluminium of mass 1kg is heated to 100celsius and then placed in 0.4kg of water at 20celius if the mixture reaches a temperature of 60celsius what is the specific heat capacity of the aluminium if that of water is 4200j/kg
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Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.
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(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?
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a piece of aluminium of mass 1kg is heated to 100celsius and then placed in 0.4kg of water at 20celi...
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