Answer:
The reason behind fire in water when nail polish is added is the presence of acetone which is a flammable substance. Acetone, commonly known as dimethyl ketone or 2-propanone, is a flammable chemical in nail polish. Acetone is flammable as well as poisonous when it comes contact with moisture.
Explanation:
The reason behind fire in water when nail polish is added is the presence of acetone which is a flammable substance. Acetone, commonly known as dimethyl ketone or 2-propanone, is a flammable chemical in nail polish. Acetone is flammable as well as poisonous when it comes contact with moisture.
Kinetic energy is energy possess by an object due to it motion.
Mass 1; m = 500 Kg Velocity 1; V = 40 m/s
Mass 2; m = 1000 Kg Velocity 2; V = 20 m/s
Formula: K.E = 1/2mv²
For Mass 1 K.E = 1/2(500 Kg)(40 m/s)² = 400, 000 J
For Mass 2 K.E = 1/2(1000 Kg)(20 m/s)² = 200,000 J
This solution shows that a larger velocity will have a greater kinetic energy.
Resistivity is material property. It depends only on temperature. For the same material with different length and area, resistivity remains the same until temperature remains constant.
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Answer:
1. Simply τ = m x g x r = 54kg x 9.8m/s² x 0.050m = 26 N·m
2. The bucket creates a torque
τ = 75kg x 9.8m/s² x 0.075m = 55 N·m,
so we must create the same torque with the handle.
55 N·m = F x 0.25m
F = 220 N
Explanation:
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