Answer:
7976 Pascals significant figure= 7.9*10^3
Explanation:
formula of hpg = height*density*gravitational energy
.80*10*997=7976 pascals
I think it’s b... not sure tho sorry
Answer:

Explanation:
Height reached by the object after push off is given as


now we have


now we know that this push last for total distance of 0.18 m
so during the push we will have



now in terms of g = 9.81 m/s/s we have


Alpha > Beta > Gamma
Explanation:
Alpha particles are the heaviest radiation whereas gamma rays are the lightest.
An alpha particle closely resembles a helium particle.
Beta particles are similar to electrons in nature
Gamma rays have no weight. They are just rays.
Alpha particles have a mass of 4.0012amu which is that of helium
Beta particles have a mass of 5.5 x 10⁻⁴ amu
Gamma rays have no mass.
Learn more:
Electromagnetic radiations brainly.com/question/6818046
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