B. it moves up and down with the load
Answer:
Biodiversity decline continues due to a rapidly expanding human population. Habitat is damaged in order to meet growing needs for agriculture, urban development, water and materials. Fish, wildlife and plants are overharvested, despite mounting evidence that many harvesting practices are unsustainable.
E = mgh
= (2)(9.8)(4)
= 78.4 Joules
Answer:
The third charge placed is 0.80 m.
Explanation:
Given that,
Distance = 0.57 m
First charge = q
Third charge = 2q
We need to calculate the electrostatic force on charge q₁ due to q₂
Using formula of electrostatic force

When placed another charge q₃ at certain distance from origin, then the net force on charge q₁ due to both charges is

The net electrostatic force on the charge at the origin doubles.






Put the value into the formula



Hence, The third charge placed is 0.80 m from origin in x-axis.