A45.0-kg girl is standing on a 147-kg plank. the plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. the girl begins to walk along the plank at a constant velocity of 1.53 m/s to the right relative to the plank. (let the direction the girl is moving in be positive. indicate the direction with the sign of your answer.)

Explanation:

given,

mass of the girl (m₁)= 45 kg

mass of the plank(m₂) = 147 kg

constant velocity of girl relative to plank  = 1.53 m/s

velocity relative to ice berg(v₁) = ?

conservation of momentum

momentum of system = 0

hence, the velocity relative to ice berg is 1.17 m/s

when cloud cover increases then the suns ray's which provides the earth with light and warmth gets covered due to the due to the suns ray's being blocked, the temperature in that region

therefore to conclude i would like to say that,

=more the cloud cover, the lesser the

happy to

pls mark as brainliest.

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!