Answer:
B is correct
Explanation:
Battery contains sulfuric acid H2SO4. As the battery cools and eats with the running of the motor, hydrogen gasses is released from electrolytic reactions and escapes through the vents. it mixes with other particulates. The mixtures react at the electrical terminals of the battery and corrosion is formed.
Corrosion can be prevented by the addition of anti corrosion gel. It can also be removed by scrubbing the terminals with a hard brush
Explanation:
I have asked question in my profile please tell me the answer
Answer:
Speed of the ambulance is 32.7 metres per second.
Explanation:
Let the actual frequency of the siren be
.
Frequency observed by me when ambulance is approaching = 540 Hz
Frequency observed by me when ambulance is moving away = 446 Hz
Let
be the speed of sound and
be the speed of ambulance.Then according to Doppler effect:
When source is moving towards observer,frequency observed is given as
= 540 Hz
When source is moving away from observer,frequency observed is given as
= 446 Hz
Taking
and solving the above two equations by eliminating
,
we get ![v_{a} = 32.7 \frac{m}{s}](https://tex.z-dn.net/?f=v_%7Ba%7D%20%3D%2032.7%20%5Cfrac%7Bm%7D%7Bs%7D)
Answer:
Radio, sound communication by radio waves, usually through the transmission of music, news, and other types of programs from single broadcast stations to multitudes of individual listeners equipped with radio receivers. ... About 1945 the appearance of television began to transform radio's content and role.
Explanation: