3 years ago

After a chemical reaction, the atomic nuclei are _________.

Physics

1 answer:

sleet_krkn [62]3 years ago

4 0

After a chemical reaction, the atomic nuclei are unchanged. (C)

The nucleii don't know a thing about the outside world during

physical or chemical processes ... not until NUCLEAR things

happen.

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3 years ago

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9. A sports car travels on a straight road at 22.0 km/h and increases its speed to 57.0 km/h in

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2 years ago

Calculate the elastic potential energy stored in a spring if it has a force constant of 150 N/m. the spring is extended to a len

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Answer:

6.75J

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2 years ago

An 80-kgkg quarterback jumps straight up in the air right before throwing a 0.43-kgkg football horizontally at 15 m/sm/s . How f

vladimir1956 [14]

Answer:

V = 0.0806 m/s

Explanation:

given data

mass quarterback = 80 kg

mass football = 0.43 kg

velocity = 15 m/s

solution

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so that here no initial momentum of the quarterback

so that final momentum of the system will be 0

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M(quarterback) × V = m(football) × v (football) ........................1

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3 years ago

In your physics lab you are given a 10.1-kg uniform rectangular plate with edge lengths 68.7 cm by 47.5 cm. Your lab instructor

VladimirAG [237]

Answer:

2.35 kgm^2

Explanation:

we take length 68.7 cm as x-axis and 47.5 cm as y-axis then the axis about which we have to find out moment of inertia will be z-axis.

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$I_x = ML^2 /3 = 10.1\times 0.4752 /3 = 0.7596$ kg-m2

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2 years ago