What is SONAR? For what it is used?

Neutron absorbing control rods or neutron absorbing chemicals added to the coolant in nuclear reactor to keep the chain reaction under control.

Cardamom,coriender, mustard, cloves, cumin,black pepper

The criterion used by the UNDP for measuring development is different from the one used by the World Bank in the sense that it uses a combination of factors such...

t = 1.02 s, v = 1531 m/s  distance d = v × t = 1531×1.022 m = 780.81 m

(a) ultrasonic waves

Compound A is sodium hydrogencarbonate-NaHCO3 (i) It is used in fire extinguishers because it produces CO2 gas on reaction with acid.   H2SO4 + 2NaHCO3 ----> Na2SO4 + 2H2O + 2CO2                                                               (ii) It...

(i)Duralium (ii) Solder

Heating effect – Geyser, room heater. Magnetic effect – Electric bell, Cranes to lift magnetic material

Let the distance between the ship and the enemy submarine be ‘S’. Speed of sound in water = 1450 m/s Time lag between transmission and reception of Sonar waves = 77 s In...