3 years ago

Which statement about an atom is correct?(1 point)

Physics

2 answers:

alexdok [17]3 years ago

5 0

Answer:

The electron has a negative charge and is found outside of the nucleus.

Explanation:

1.) Neutrons have no charge, not a negative charge.

2.) Neutrons are found inside the nucleus, not outside.

3.) Protons have a positive charge.

PSYCHO15rus [73]3 years ago

3 0

Answer:
the electron has a negative charge and is found outside of the nucleus
explanation:
neutron is neutral inside the nucleus
proton is positive inside the nucleus
electron is negative outside the nucleus

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h = Height the bear slides from = 15 m

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v = Velocity of bear = 5.5 m/s

f = Frictional force

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$P=mgh\\\Rightarrow P=43\times -9.81\times 15\\\Rightarrow P=-6327.45\ J$

Change that occurs in the gravitational potential energy of the bear-Earth system during the slide is -6327.45 Joules

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Kinetic energy of the bear just before hitting the ground is 650.375 Joules

Change in total energy is given by

$\Delta E=fh=-(\Delta K+\Delta P)\\\Rightarrow fh=-(650.375-6327.45)\\\Rightarrow fh=5677.075\\\Rightarrow f=\frac{5677.075}{h}\\\Rightarrow f=\frac{5677.075}{15}\\\Rightarrow f=378.47166\ N$

The frictional force that acts on the sliding bear is 378.47166 N

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3 years ago

Read 2 more answers