Question

How much work is done by a 125 watt blender that is crushing ice for 5 minutes calculate the energy consumed in joules?

Answer 1

Answer:

Rate of doing work is power.

P=W/t

125=W/5*60

W=125*5*60

=125*30

=3750 joules

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Answer 2

The energy consumed by the blender is 37.5 kJ.

Explanation:

It is given that,

Power of the blender, P = 125 Watts

Time, t = 5 min = 300 s

We need to find the energy consumed by the blender. Power of a source is given by energy consumed per unit time. It is given by :

$P=\dfrac{E}{t}$

$E=P\times t$

$E=125\ W\times 300\ s$

E = 37500 J

or

E = 37.5 kJ

So, the energy consumed by the blender is 37.5 kJ. Hence, this is the required solution.

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