Physics Answers

2. A particle with a charge of 5nC has a distance of 0.5m away from a charge of 9.5nC. What is

its electric potential energy?

3. Find the electric potential at a distance of 8cm from a 7.58pC charge.

4. What is the electric potential given 0.58m away from a 18uC charge?

5. Calculate the amount of electric potential energy possessed by 2.52x10^-10C at a point

where the electric potential is 4.7 Volts.

6. The electric potential at a distance of 0.92m from a point charge is -8.41x10^5 V. what is the

quantity of the point charge?

Two point charges Q1 = 44 C and Q2 = -5  C are separated by a distance of 17 cm. Find the electric potential energy of the system

The radio tuning capacitor consists of 26 plates of area 24 cm². The distance between plates when set for maximum capacitance is 2mm. Assuming that the area of projection at maximum capacity is equal to the area of the plates, find the maximum capacity of this condenser.

In raising a 5000-N piano with a pulley system, the workers note that for every 2m or rope pulled down, the piano rise 0.4m.

A. ideally, how much force is required to lift the piano?

B. if the workers actually pull with 2500N of force to lift the piano, what is the efficiency of the pulley system?

Two identical charges, 3.0 m apart, exert forces of magnitude 5.0 N on each other. What is the value of either charge?

The specific weight of glycerin is 78.6 lb/ft3 . Compute its density and specific gravity. What is its specific weight in kN/m3 ?

A certain oscillator satisfies the equation of motion: 𝑥••+ 4x = 0. Initially the particle is at

the point x = √3 when it is projected towards the origin with speed 2.

2.1. Show that the position, x, of the particle at any given time, t, is given by:

x = √3 cos 2t – sin 2t.

In an electrically neutral atom, the number of protons equals the number of?

Light of wavelenght 500nm is directed normally to a double slit of 1.5mm. If the fringes is observed at a distance of 2m, what is the fringe separation? How many fringes can be observed in 1cm?

Light of wavelength 500nm is directed normally to double-slit of 1.5mm. If the fringes is observed at a distance of 2m, what is the finge separation? How many fringes can be observed in 1m?