Physics Answers

Oil flows through a standard 25 mm diameter orifice under 5.5 m head at a

measured rate of 3 L/s. The jet strikes a wall 1.5 m away and 0.12 m

vertically below the centreline of the contracted section of the jet. Determine

all the coefficients of the orifice.

What must be the magnitude and direction of E that will balance the weight of

a.) an electron

b.) a proton

show your solution

A box of mass 20 kilograms is kept on a smooth horizontal surface. Another object of mass 16 kg is kept on the box. The two objects are connected by light in extensible string and the string goes over smooth pulley . If a force of 6 newton is applied on the box , and the acceleration of the box.

An object of mass 4 kg is moved on a horizontal surface with a constant acceleration of 0.2m/s^2 , by a horizontal force of 6 Newtons. Find the friction force acting on the object and the coefficient of friction.

Motion of a particle is determined by the equation

d x dx x t

dt dt

2

2

-

-

 4 8 20cos2

The particle starts from rest at x = 0. Find x(t).

Two-point charges are arranged on the x-y coordinate system as follows; q₁= 3.0 nC at (0, 3m) and q₂= -9.0 nC at (0,0). Find the electric field at point on x-axis 4.0 m from the origin. 

Calculate the magnitude and direction of the electric field 0.85 m from a + 3.25 𝜇C point charge. 

Derive the expressions for RMS value and average value.

When a circuit is excited by a sinusoidal voltage source. And also show that form factor of sinusoidal aternating

current wave in 1.11.

In an R-L-C series circuit a maximum current of 0.5 A is obtained by varying the value of inductance L. The supply voltage is fixed at 230 V, 50 Hz. When maximum current flows through the circuit, the voltage measured across the capacitor is 350 V. What are the values of the cricuit parameters ?

What is the total capacitance of a 10.0 F, 15.0 F, 20.0 F and 5.0 F if they are connected in parallel?