Which simple machine is a doorknob?
1 answer:
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Answer:
a) Impulse(J)=40.04 kg.m/s
b)F=2566.66 N
Explanation:
Given that
We know that impulse(J) impulse is a vector quantity
We know that P=mV
So
Now by putting the values
J=1.3(9.8-(-21))
So impulse(J)=40.04 kg.m/s
Force is given as
or we can say that
So
F=2566.66 N
Answer:
Explanation:
m = Mass of object =
m' = Mass of water =
= Density of object
= Density of water
Weight of the water displaced is the force in the case of floating objects
According to the question
In the case of floating objects
The ratio of the density of the object to that of water is
Answer:
is the liberation of electrons from an electrode by virtue of its temperature
Explanation:
