5. Kelvin applied a rightward force of 302 N to a 29 kg desk to accelerate it across the floor. The
1 answer:
The force of friction is 213.2 N
Explanation:
The frictional force acting on an object sliding on a surface is given by:
where:
is the coefficient of friction
m is the mass of the object
g is the acceleration of gravity
In this problem we have
m = 29 kg
Therefore, the force of friction is
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Answer:
The pressure difference will increase by the factor of 1.75
Explanation:
For constant flow rate, coefficient of viscosity, length of the vessel and the pressure difference is inversely proportional to the fourth power of the radius of the blood vessel
Apply the principle of Poiseuille’s law.
Q = (P2 - P1)/R
Pls check the attached file for step by step solution of the question. It is submitted in this way as typing the equation may not be explanatory.
Answer:
Explanation:
Given:
Thickness of the paperweight cube,
apparent depth from one side of the inbuilt paper in the plastic cube,
apparent depth from the other side of the inbuilt paper in the plastic cube,
Now as we know that refractive index is given as:
- Let the real depth form first side of the slab be,
- Then the depth from the second side of the slab will be,
Since refractive index for an amorphous solid is an isotropic quantity so it remains same in all the direction for this plastic.
Now the refractive index: