pls tell me the 5 and 4 answer
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dnavneetk9549:
i m sorry i missed the chance of answering as i was busy in the maths
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power of enjine =?
effi = 75%
mass = 500 kg
height = 10 m
time = 50 sec.
500*9.81*10*6/5
58860 watts
effi = 75%
mass = 500 kg
height = 10 m
time = 50 sec.
500*9.81*10*6/5
58860 watts
but how
the answer of 4th should be 120kw
acc. to me
i don't know what written in just answersheet i told
I think his answer is right 120 ke
no
okk
power formula is P=W/t and time in s and you should divide the time
s= second
i got the answer
Answered by
2
hope the answer helps you.
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their is a mistake where u have find work (w)= 96000j but u just check it work will be come 288000 and by dividing by 8 = 36000 w= fs = 1000*3*96
you have written a=10 instead of 3 you have also taken out the 3
sorry, My mistake
thank you for telling
i am sorry
no problem mistake makes perfect in life
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