2/A mains electricity hairdryer has a resistance of 46 Ω and a current of 5 A flows through it when in use. What is the voltage
across the hairdryer? (This is the mains voltage in the UK)
3/ What is the voltage across a lamp of resistance 4 Ω if a current of 2.5 A flows through it?
Please help :)
3/ What is the voltage across a lamp of resistance 4 Ω if a current of 2.5 A flows through it?
Please help :)
1 answer:
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Answer:
Explanation:
Given two mass on an incline code and
and an angle of inclination
.
. Assume that
is the weight being pulled up and
the hanging weight.
-The equations of motion from Newton's Second Law are:
where a is the acceleration.
#Substituting for (tension) gives:
#and solving for
which is the system's acceleration.