3 years ago

PLEASE HELP ASAPPPPP

Physics

1 answer:

leva [86]3 years ago

4 0

Answer:

link

Explanation:

ww.comhwhelp

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A 52 kg child on a swing is travelling at 6 m/s . What is his gravitational potential energy if he has 1000 J of the mechanical

DiKsa [7]

Answer:

The correct answer is "64 J".

Explanation:

The given values are:

Mass,

m = 52 kg

Velocity,

v = 6 m/s

Mechanical energy,

= 1000 J

Now,

The gravitational potential energy will be:

⇒ $P.E=1000-\frac{1}{2}mv^2$

$=1000-\frac{1}{2}\times 52\times (6)^2$

$=1000-26\times 36$

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$=64 \ J$

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Explanation:

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After a nucleus with 85 protons undergoes alpha decay, it has<br><br> ? protons.

Valentin [98]

Answer:

After a nucleus with 85 protons undergoes alpha decay, it has 83 protons.

Explanation:

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In the given substance's nucleus, there are total of 85 protons

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3 years ago

PLEASE HELP ASAPPPPP​

PLEASE HELP ASAPPPPP