Please answer 14,15,16.I will mark it as brainliest
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As you know, power is the work done per unit time. The work done is same as the potential energy of the object.
For the butterfly, it flies 0.5m per second. So, Power = Work done per unit time = mgh
Mass of the butterfly (m) = 1g = 0.001kg = 10m/s
h= 0.5m (in one second)
Therefore,(butterfly) = 0.001/10×0.5 =0.005W
For the squirrel, m = 250g=0.25kg
g = 10m/s
h = 0.5m
(squirrel) = 0.25×10×0.5= 1.25W
For the butterfly, it flies 0.5m per second. So, Power = Work done per unit time = mgh
Mass of the butterfly (m) = 1g = 0.001kg = 10m/s
h= 0.5m (in one second)
Therefore,(butterfly) = 0.001/10×0.5 =0.005W
For the squirrel, m = 250g=0.25kg
g = 10m/s
h = 0.5m
(squirrel) = 0.25×10×0.5= 1.25W
abi2790:
Ans for 15:-
F=GMm /R^2 M=Mass of the earth =6 x10*24kg m=mass of the body=1kg,R= Radius of the earth=6.4 x10*3m,G=Gravitational constant=6.67 x10*-11Nm*2/kg*2 then F=6.67 x10*-11x6 x10*24 x1/6.4 x6.4 x10*3 x10*3 =6.67 x6 x10*13/6.4 x6.4 x10*6 =667 x6 x10*7/64 x64=0.97705 x10*7 =9.7705 x10*6N
Thanks I will definitely marked it as brainliest
Ans for 16:-
1)Centrifugation.Explanation:-Sometimes the solid particles in a liquid are very small and pass through a filter paper. For such particles the filtration technique cannot be used for separation. Such mixtures are separated by centrifugation.
2)Evaporation
3)Fractional distillation
4)Magnetic seperation
ThanKs a lot
your welcome
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