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brilliants [131]
3 years ago
11

Does the nucleus of an atom have a positive or negative charge?

Physics
2 answers:
Flura [38]3 years ago
8 0
A.
because the nucleus contains protons and neutrons BUT neutrons are neutral and protons are positive, so the answer is A 
Marta_Voda [28]3 years ago
7 0

Answer:

A. The nucleus contain protons, so it has a positive charge.

Explanation:

Nucleus is the dense core of an atom which contains protons and neutrons.

Protons have positive charge.

Neutrons have no charge.

Electrons are negatively charged.

But electrons are present in the energy level i.e. outside nucleus, that is why a nucleus contains positive charge.

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What is the correct order of the structures of the motor neuron?
Ulleksa [173]
Dendrites, the cell body, axon, terminal branches of the axon
7 0
3 years ago
Magnet A has twice the magnetic field strength of magnet B and pulls on magnet B with a force of 100 N. The amount of force that
son4ous [18]

The force exerted by the magnetic in terms of the magnetic field is,

F\propto B

Where B is the magnetic fied strength and F is the force.

Thus, if the magnetic A has twice magnetic field strength than the magnet B,

Then,

B_A=2B_B

Thus, the force exerted by the magnet B is,

\begin{gathered} F_B\propto B_B \\ F_B\propto\frac{B_A}{2} \\ F_B=\frac{F_A}{2} \\ F_B=\frac{100}{2} \\ F_B=50\text{ N} \end{gathered}

Thus, the force exerted by the magnet B on magnet A is 50 N.

The force exerted by the magnet A exerts on the magnet B is exactly 100 N as given.

Hence, the option B is the correct answer.

3 0
1 year ago
So i need help with waves what is a transverse wave
zaharov [31]

Answer:

A wave in which the medium vibrates at right angles to the direction of the propagation is called transverse wave.

3 0
3 years ago
Why shouldn't we consider the needs of humans first
Orlov [11]

Answer:

We should not consider the needs of humans first because Conservation of nature is more important.

Explanation:

Human beings are important but the priority must be given to nature. Human beings have uncountable needs and if we focus on satisfying all such needs then it will affect our nature. Because finally our needs are fulfilled by using the resources from nature.

So rather than considering the needs of humans first, we must try to preserve our nature as much as possible. It is not done then it will lead to disaster.

8 0
3 years ago
A sample of 2.50 kg of water is held at a temperature of 100°C. How much energy must be added to completely turn the liquid wate
kap26 [50]

Answer:

Explanation:

Since 100C is the boiling temperature for water, for this problem we don't need to calculate the energy needed to get to the boiling point, just the heat or energy needed to vaporize the water to steam at 100C.

The formula for this is  q=m(delta)

q is Joules of heat needed to vaporize the water to steam at 100C

m is mass in grams

Delta is in Joules per gram and can be looked up for water at this temperature. Here, it is approximately 2260J/g. This online lecture should help ease understanding: https://cabrillo.instructure.com/courses/10267/modules/items/256219

Therefore...

q=2.5g (2260J/g)= 5650J = 5.65kJ

I do not do Physics tutoring but am happy to answer questions here.

7 0
2 years ago
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