Anthropology
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Answer:
Density = Mass/Volume => Volume = Mass/Density = 12/3.1 = 3.87ml
Explanation:
The required spring constant:
The spring constant of the spring is .
Calculation:
The mass of the car is m=1200 kg, the speed of the car is v=25 m/s, and after colliding the spring is brought to rest at a distance of x=2.5m. Let the spring constant of the spring is, k.
From the conservation of energy,
Total initial kinetic energy= Total final potential energy of the spring
Therefore,
Now, substituting the values of the mass of the car, speed of the car, and displacement, we get:
To know more about spring constant, refer to:
brainly.com/question/14159361
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Answer:
A metal is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically malleable (they can be hammered into thin sheets) or ductile (can be drawn into wires). A metal may be a chemical element such as iron; an alloy such as stainless steel; or a molecular compound such as polymeric sulfur nitride.