BTEC APPLIED SCIENCE UNIT 5
PHYSICS EXAM QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS
What are the standard units of mass, length and time? - ANSWERS--Kilograms, metres
and seconds
What is the second law of thermodynamics? - ANSWERS--Heat will not flow from a
colder body to a hotter one without an input of work. A natural process cannot fully be
reversed.
What is an isothermal process? - ANSWERS--a process that occurs at constant
temperature
What are the SI prefixes for 10^3, 10^6 and 10^9? - ANSWERS--kilo, mega, giga
What are the SI prefixes for 10^-3, 10^-6 and 10^-9? - ANSWERS--milli, micro, nano
What is work done? - ANSWERS--The energy transferred in moving something
What is power? - ANSWERS--the rate at which work is done
What happens to a gas when it is compressed? - ANSWERS--Particles get closer
together
PHYSICS EXAM QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS
What are the standard units of mass, length and time? - ANSWERS--Kilograms, metres
and seconds
What is the second law of thermodynamics? - ANSWERS--Heat will not flow from a
colder body to a hotter one without an input of work. A natural process cannot fully be
reversed.
What is an isothermal process? - ANSWERS--a process that occurs at constant
temperature
What are the SI prefixes for 10^3, 10^6 and 10^9? - ANSWERS--kilo, mega, giga
What are the SI prefixes for 10^-3, 10^-6 and 10^-9? - ANSWERS--milli, micro, nano
What is work done? - ANSWERS--The energy transferred in moving something
What is power? - ANSWERS--the rate at which work is done
What happens to a gas when it is compressed? - ANSWERS--Particles get closer
together
