Contact area is not a factor of the amount of friction force acting between two bodies in contact, preventing rolling or sliding
Reasons:
- Friction force is the product of the normal reaction and the coefficient of friction.
- The coefficient of friction is higher in softer tires than hard tires which are required to be wider to reduce the pressure that can cause deformation withstood by hard tires.
- The wide tires in drag racing cars can be thought of being made from the soft compound tire material having a higher coefficient of friction that increases the friction force.
Other advantages of wide tires are;
- Shorter stopping distance
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brainly.com/question/17209968
Answer:
Length of wire=2.16 m
Diameter of wire=0.232 mm
Explanation:
m= mass of copper wire= 0.82 g
R= Resistance of copper wire= 0.87 ohms
D= Density of copper= 8.96 g/cm^3
ρ= Resistivity= 1.7×10^-8 Ωm
C (action has equal and opposite reaction), b (wind is a force), and a (inertia because an object in motion has a tendancy to stay in motion)
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Your question: A person is in a room whose ceiling and two adjacent walls are mirrors. How many images are formed?
Your answer: A person is in a room whose ceiling and two adjacent walls are mirrors.7 images are formed.
The answer is option C.
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