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5.Work, Energy, Power and Collision
normal
એક છોકરોે $5$ મિનિટમાં $29g$ આઈસ્ક્રીમ ચાવવા માટે સક્ષમ છે. છોકરાનો પાવર હોર્સ પાવરમાં ગણો.
A
$0.03$
B
$1$
C
$2.2 $
D
$4 $
Solution
પાવર ${\text{P}}\,\, = \,\,\frac{{\text{W}}}{{\text{t}}}\,\, = \,\,\frac{{{\text{JML}}}}{{\text{t}}}\,\, = \,\,\frac{{{\text{4}}{\text{.2}}\,\,{\text{J/cal}}\,\, \times \,\,{\text{20g}}\,\, \times \,\,{\text{80cal/g}}}}{{{\text{5}}\,\, \times \,\,{\text{60}}\,\,\,{\text{s}}}}\,\,\, = \,\,\,{\text{22}}{\text{.4}}\,$ વોટ
${\text{P}}\,\, = \,\,\,\frac{{{\text{22}}{\text{.4}}}}{{{\text{746}}}}\,\,\, = \,\,0.03\,\,\,H.P.$
Standard 11
Physics
