AM
BTEC APPLIED SCIENCE UNIT 5 PHYSICS EXAM QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS
Practice questions for this set
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What is an isothermal process?
Select the correct definition
1the rate at which work is done
2the area under the graph
all collisions are elastic
a process that occurs at constant
3all motion is random
4temperature
there are no forces between particles
Don't know?
Terms in this set (30)
What are the standard units of mass, Kilograms, metres and seconds
length and time?
What are the SI prefixes for 10^3, kilo, mega, giga
10^6 and 10^9?
What are the SI prefixes for 10^-3, milli, micro, nano
10^-6 and 10^-9?
What is work done? The energy transferred in moving something
What is power? the rate at which work is done
Particles get closer
What happens to a gas when it is together Gas pressure
compressed? increases
More collisions between particles and container
Temperature of gas rises
How do you calculate work done from The area under the graph
a P- V graph?
What is efficiency? the percentage of the work input that becomes useful work output
What is thermal equilibrium? when two objects have the same temperatures and net heat transfer is zero
The change in a system's internal energy is equal to the difference
What is the first law of thermodynamics? between heat added to the system from its surroundings and work done
by the system on its
surroundings
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