1. A 160 g plece or Iron has a volume or 20 cm3 What is its Density?

Density -
2. A 15 g piece of wood has a volume of 10 cm3. What is its Density?
Density -

3. A 300 g piece of copper has a volume of 200 ml
What is its Density?

Density -

4. 100 g of a liquid has a volume of 50 ml.
What is its Density?
Density -

5. 140 g of a liquid has a volume of 210 mL.
What is its Densit2

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Answer: a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same sign as the  -4.0  µc charge.======electricstatic force between two point charges  is given by    where k is coulomb's constant,  8.99×10⁹  n·m²/c², q₁ and q₂ are the point charges, and r is the distance between the two point charges.assign positive to q₁let q₁ =  6.0 µc, q₂ = -4.0  µc, q₀ represent the charge at the origin, and q₃ represent this new charge to place.the charge at the origin q₀ would experience the following force f₀₁ from q₁, with r = 6.0 m (note that 1  µc = 10⁻⁶ c)    the force from q₂    the force from q₃    the net force on the origin charge, q₀, has to be zero for no electrostatic forcehaving an equation where k and q₀ can be divided out of the equation will allow us to solve for q₃    isolating:     a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same as the  -4.0  µc charge

Igot 56.55 as the anwer