Help please I have to turn this in tonight!!

Physics

2 answers:

Svet_ta [14]3 years ago

4 0

False. In a neutral atom, the number of protons is equal to the number of electrons and the number of neutrons has to be determined by an equation.

inna [77]3 years ago

3 0

Answer:

True

Explanation:

i searched it up and well this thing is making me do it up till 20 characters long so yea

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How much power does it take to lift 70.0 N to 5.0 m high in 5.00 s?

lesantik [10]

Answer:

Power = 70 W

Explanation:

Given that,

Force, F = 70 N

Height, h = 5 m

Time, t = 5 s

We need to find the power of the object. We know that,

Power = work done/time

Put all the values,

$P=\dfrac{Fd}{t}\\\\P=\dfrac{70\times 5}{5}\\\\P=70\ W$

So, the required power is 70 W.

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3 years ago

Describe the electrical and chemical changes that lead to an action potential. Define myelin and discuss its effects.

solniwko [45]

Answer:

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There is layer of fatty substances called as Myelin Sheath over the course of axons. It helps the electrical signal to be transmitted with a fast pace and efficiently over the course.

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3 years ago

Why are coal,nuclear,oil,and natural gas determined to be non-renewable types of energy resources

IrinaVladis [17]

Answer:

Once used as a energy source they cannot be charged/used again.

Explanation:

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3 years ago

A rocket, initially at rest on the ground, accelerates straight upward from rest with constant (net) acceleration 29.4 m/s2 m /

Sidana [21]

Answer: