Tag: physics

$(9.25) _{10} = (9) _{10} + (0.25) _{10} = (1001) _2 + (0.01) _2 = (1001.01) _2$

$100010 + 11011 = (111101) _2$

The binary representation of $13$ is $1101$. The $1's$ complement of $13$ is $0010$. The $2's$ complement of $13$ is $0010 + 1 = 0011$.

In standard BCD (Binary Coded Decimal) or common character encoding representations, 'A' is often represented as 1010 in specific 4-bit contexts or extended codes.

Electrocardiography is a medical diagnostic

techniques, ultrasonic waves are used to construct the image of the heart, for

monitoring a nuclear reactor.

The frequency of an ultrasonic wave is greater than 20,000Hz and equal to 107Hz. These waves are not audible to a human ear but they can be heard by animals and birds.

Bats can produce ultrasonic waves by flapping their wings.
They can also detect these waves.these waves produced by the bats after reflection from the obstacles like building guide them to  remain away from the obstacles during night with the help of ultrasonic waves.

By detecting reflection of ultrasonic sound bats understands position and type of prey of any obstacle in way

Sound above frequency of 20000Hz is ultrasound or ultrasonic sound

By producing ultrasonic sound which are sent to the prey and reflected back, to find the exact location of the prey and catch them.