Answer:
The weight of water weight is 5.043 N.
Explanation:
Given that,
Force = 4.78 N
Weight of steel bolt = 2.07 N
Density of steel = 7.86 g/cm³
Suppose determine how much does the glass of water weight.
We need to calculate the volume of bolt
Using formula of density
Put the value into the formula
We need to calculate the force on bolt
Using buoyant force
Put the value into the formula
We need to calculate the new weight of glass of water
Using formula for weight of glass of water
Put the value into the formula
Hence, The weight of water weight is 5.043 N.
C. The object is accelerating as the direction of the object is changing
Energy is neither created nor destroyed
Answer:
12353 V m⁻¹ = 12.4 kV m⁻¹
Explanation:
Electric field between the plates of the parallel plate capacitor depends on the potential difference across the plates and their distance of separation.Potential difference across the plates V over the distance between the plates gives the electric field between the plates. Potential difference is the amount of work done per unit charge and is given here as 21 V. Electric field is the voltage over distance.
E = V ÷ d = 21 ÷ 0.0017 = 12353 V m⁻¹
Answer:
conductivity of solution is reduced.
Explanation:
When two oppositely charged electrodes are immersed in a solution, positively charged ions are attracted to the negative electrode and gain electrons. The negatively charged ions are attracted to the positive electrode and release electrons.
Due to the process mentioned above , the negatively charged ions are accumulated at the positive electrode and the positively charged ions are accumulated at the negative electrode . This accumulation prevents further attraction of ions at oppositely charged electrodes because the incoming ions face repulsion from already accumulated ions at electrodes. Further , it creates an emf acting in opposite direction . It reduces the current through the solution. Hence conductivity of solution is reduced.
