Physics, 13.06.2020 13:57 andydiaz1227
A lamp uses a 230 V mains supply and transfers 96 J of energy every second. Work out the current through the lamp. Give your answer to 1 decimal place.
Answers: 2
Physics, 21.06.2019 17:20
Research the neutrino using the internet and report your findings. in a nuclear decay, the nucleus of an atom splits apart. larger particles can be detected and their masses and velocities can be recorded. explain how the existence and properties of the neutrino could be predicted using the conservation laws.
Answers: 3
Physics, 21.06.2019 23:00
Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?
Answers: 1
Physics, 22.06.2019 04:30
Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.
Answers: 1
Physics, 22.06.2019 05:30
Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?
Answers: 1
A lamp uses a 230 V mains supply and transfers 96 J of energy every second. Work out the current thr...
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