A 15W fluorescent light bulb uses operates for 30 minutes and produces 20kJ of light energy, what is the percent efficiency of t
1 answer:
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Answer:
Explanation:
As we know that the force between two small spheres is given as
here we know that
= charges on two small spheres
r = distance between two spheres = 0.15 m
now the force between them is given as
now when two spheres are connected together then the charge on them is equally divided
now the force between them is given as
so here we have
Answer
given,
mass of the stick = 290 grams = 0.29 Kg
Force on the stick on one side = F = 9 N
force acting perpendicular to stick.
magnitude of acceleration
rate of change of angular momentum is equal to Force
rate of change of angular momentum = 9 N
F = m a
a = 31.034 m/s²
Direction of motion will in the direction of force application or in the direction of change of velocity
Answer:
The final velocity of 18 kg ball is = 42.09
Explanation:
Mass of first ball = 18 kg
Mass of second ball = 47 kg
Initial velocity of 18 kg ball = 76
Initial velocity of 47 kg ball = 0
Final velocity of 18 kg ball = ??
Final velocity of 18 kg ball is given by the formula
=
Put all the values in above formula we get
= 2 × 18 ×
= 42.09
Thus, the final velocity of 18 kg ball is = 42.09