Physics Answers

Power

Let the charge q and -q be placed alternatively along the x-axis at position x=2m,x=3m,x=5m and x=8 m.what is the electric field at x=0 due to these changes?

An ideal gas is placed in a 4L container at a temperature of 300K and a pressure of 6

atmospheres. The pressure is held constant while the volume of the gas is halved. What is the

new temperature of the gas?

A. 1200K

B. 600K

C. 300K

D. 150K

E. 75K

A 50Uf capacitor Is connected across 230v 50hz supply calculate the reactance offer by the capacitor

If v speed of observer is added to c of light than resultant

A)v

B)v+c

C)c

D)v-c

A force 1500N exists between two identical point charges separated by a distance of 30cm. Calculate the magnitude of the two point charges.

A charged oil-drop of radius 1.3×10-⁶ m is prevented from falling under gravity by the vertical field between two horizontal plates charged to a difference of of 8340V. The distance between the plates is 16 mm and the density of oil is 920 kgm-³. Calculate the magnitude of the charge on the drop.

[Take g = 10 ms-²]

if two equal charges , each of 1c,were separated in air by a distance of 1km,what would be the force between them?

Two charges (−12.6 × 10−12 𝐶𝐶 and − 1.13 × 10−13 𝐶𝐶) are separated by a distance of

3.75 𝜇𝜇𝑚𝑚. Compute the force of attraction between them.

A ball (m = 0.1 kg) is thrown upwards with a velocity of 8 m/s. At what height will its velocity be 3 m/s?