Thursday, April 30, 2020

Extra Calculation Questions - Pressure

PRESSURE
Calculation questions in topic of pressure are now released for you to access and make you are own practices. Also you may access more questions found in other pages such those found in Exercises 

1.       What pressure does a diver experiences at a depth of 16 m in a diving tank? The density of water is 1,000 Kg/m3 and the atmospheric pressure is 100,000 Pa
2.       The figure below shows a simple type of   hydraulic braking system. The areas of cross section of the small cylinder and large cylinder are 0.0004 m2 and 0.0024 m2 respectively. A pedal is pushed against the piston in the small cylinder with a force of 90 N.
i)        Calculate the pressure exerted on the brake fluid.
ii)       Calculate the force exerted by the brake fluid on the piston of the large cylinder.
CONTINUE READING 

Monday, April 27, 2020

What is smoothing as used in Half-Wave rectifier?

WHAT IS RECTIFICATION?

Is the process which an alternating current is formed to only flow in one direction. Rectification is done by using of diodes.
OR
Rectification is the process of converting alternating current to pulsating direct current. CONTINUE READING

Sunday, April 26, 2020

Do You Know X - Rays?

X – Rays are electromagnetic waves of high energy and very short wavelength produced when fast moving electrons strikes a metal target.
https://ngondophysics.blogspot.com/p/x-rays.html
X – Rays are produced when fast moving electrons strike a metal target releasing their energy which is converted to X – rays.  CONTINUE READING