Physics Answers

4 microfarad is charged to a potential of 100volts. Another 6 farad of a capacitor is charged to a potential of 300volts. These capacitors are now joined with plates of like charges connected together. Calculate -

1. The Potential Across Each After Joining

2. The Total Electrical Energy After Joining

3. Will The Energy Stored After Joining Be The Same As The Sum Of Energy Stored Before Joining

Given energy C1 and C2 of 2 microfarad and 3 microfarad respectively charged to a potential difference of 50volts and 100volts respectively. Calculate the loss in energy when two capacitors are connected in parallel

5 mol of an ideal gas at a constant temperature if 0°c. If 2kj of energy is inputted into the system and the net change of internal energy ∆u=0, by what factor does the pressure of the gas change.

A gas is filled with oxygen at a temperature of 25°c to a pressure of 2atm. If the temperature is increased to 50°c and the pressure is increased to 5atm, by what factor does the density of the oxygen increase by.

Derive the relation between beta and gamma

A swinging pendulum has a period of 17.0s when the length is shortened by 1.5m, it's period is 8.55 calculate the original length of the pendulum

assuming that the resolving power of the eye is determined by diffraction effects only, calculate the maximum distance at which two objects separated by a distance of 2 m can be resolved by the eye. (assume pupil diameter to be 2 mm and λ = 6000 å.)

How many electrons have removed from a positively charged particles if it has a net charge of 5X10-9C?

The distance S in meters covered by a particle at time t seconds is given by

S=2t³-3t²-5t.Find

i) It's speed in the 5th second

ii) It's distance in the 3rd second

iii) The time the particle is momentarily at rest

iv) The acceleration at t=5s?

The resonant frequency f of a closed air column is known to depend on the pressure p and the density, of the air and the length, L of the air column. How are these quantities related