438 prompts matching "Efficiency, and why no machine is perfect"
Let me explain: Why no machine reaches one hundred per cent efficiency
I have just studied why no machine reaches one hundred per cent efficiency in my SS3 Physi
WAEC prep: The moving-coil galvanometer and how it is made to read
Act as a WAEC Physics examiner. I am in SS 3. Set me five exam-style questions on the movi
Teach me: Renewable and non-renewable sources distinguished
You are my personal SS3 Physics tutor. Teach me renewable and non-renewable sources distin
Let me explain: Power dissipation and why cables warm
I have just studied power dissipation and why cables warm in my SS3 Physics class. Let me
Spot my mistake: Misreading a trace by ignoring the volts-per-division setting
Act as my SS3 Physics tutor. Show me a worked solution on misreading a trace by ignoring t
Teach me: The AND, OR and NOT gates and their symbols
You are my personal SS3 Physics tutor. Teach me the AND, OR and NOT gates and their symbol
Spot my mistake: Treating an energy source as renewable when it is not
Act as my SS3 Physics tutor. Show me a worked solution on treating an energy source as ren
Teach me: The structure of the atom and nuclear notation
You are my personal SS3 Physics tutor. Teach me the structure of the atom and nuclear nota
Teach me: Mechanical advantage, velocity ratio and efficiency
You are my personal SS3 Physics tutor. Teach me mechanical advantage, velocity ratio and e
Quiz: The field pattern of a solenoid and how it resembles a bar magnet
Act as my SS3 Physics tutor and quiz me on the field pattern of a solenoid and how it rese
Practice set: Flux density inside a solenoid from turns, length and current
Act as my SS3 Physics tutor. Give me five practice questions on flux density inside a sole
Let me explain: Why a.c. is described by an r.m.s. rather than an average value
I have just studied why a.c. is described by an r.m.s. rather than an average value in my
Practice set: A purely resistive a.c. circuit and the phase between V and I
Act as my SS3 Physics tutor. Give me five practice questions on a purely resistive a.c. ci
Real-life Nigeria: Why Nigerian mains is quoted as 220 volts
Act as my SS3 Physics tutor. Show me where why Nigerian mains is quoted as 220 volts turns
Spot my mistake: Adding resistance and reactance arithmetically instead of vectorially
Act as my SS3 Physics tutor. Show me a worked solution on adding resistance and reactance
Quiz: Ground state, excited state and ionisation
Act as my SS3 Physics tutor and quiz me on ground state, excited state and ionisation. Ask
WAEC prep: Emission and absorption spectra compared
Act as a WAEC Physics examiner. I am in SS 3. Set me five exam-style questions on emission
Teach me: The photoelectric effect and what is observed
You are my personal SS3 Physics tutor. Teach me the photoelectric effect and what is obser
Let me explain: Why increasing intensity does not increase photoelectron energy
I have just studied why increasing intensity does not increase photoelectron energy in my
WAEC prep: The stopping potential and how it is measured
Act as a WAEC Physics examiner. I am in SS 3. Set me five exam-style questions on the stop