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3 years ago

Which statement describes the atomic number?

1 answer:

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Answer:The term atomic number, conventionally denoted by the symbol Z, indicates number of protons present in the nucleus of an atom, which is also equal to the number of electrons in an uncharged atom. The number of neutrons is represented by the neutron number (N)

Explanation:

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Lesson 11: electricity & magnetism unit test physical science b unit 5: electricity and magnetism (connexus)

vovikov84 [41]

Electricity and magnetism can be considered as part of the same phenomenon because both are generated by electromagnetic forces.

<h3>What is electricity?</h3>

Electricity is the movement or flow of negatively charged electrons through a suitable conductor where a charge is applied.

Moreover, magnetism is a natural phenomenon caused by the generation/movement of electric charges.

In conclusion, electricity and magnetism can be considered as part of the same phenomenon because both are generated by electromagnetic forces.

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2 years ago

A car travels a distance of 200 miles in 3.5 hours in a given trip. What is the average speed of the car in that

erica [24]

Taking into account the definition of speed, the average speed of the car in the trip is 57.14 $\frac{miles}{hour}$ .

<h3>Definition of speed</h3>

Speed is a physical magnitude that relates the displacement of an object and the time it takes to make this change in position.

So, the speed can be defined as the amount of space traveled per unit of time with which a body moves and can be calculated using the expression:

$speed=\frac{displacement}{time}$

Speed has units of $\frac{distance}{time}$ , such as $\frac{meters}{second}$ or $\frac{miles}{hour}$ .

<h3>Average speed of the car</h3>

In this case, you know that:

displacement= 200 miles
time= 3.5 hours

Replacing in the definition of speed:

$speed=\frac{200 miles}{3.5 hours}$

<u><em>speed= 57.14 </em></u> $\frac{miles}{hour}$

Finally, the average speed of the car in the trip is 57.14 $\frac{miles}{hour}$ .

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2 years ago

Imagine you re in an entrepreneur and have been provided a loan by a bank to set up a small electro plating unit. What would you

Lena [83]

Answer:

Electroplating involves deposition of a thin layer of metal onto the surface of a substance(compound) through electric current. This helps preserve the substance(compound) from rust and oxidative damage.

As an entrepreneur which has been provided a loan by a bank to set up a small electro plating unit. I would venture into electroplating electronic/electric appliances parts.This is because these types of appliances are in vogue now and used my millions of people for their day to day activities. This means that more people will come for various degrees of production and repairs which would include electroplating . This translates to more customers and more money for the repayment of the loan.

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3 years ago

If the acceleration of a moving object is zero, which of the following best describes its motion

podryga [215]

If the acceleration of a moving object is zero, the object remains at a constant speed (without friction)

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3 years ago

Read 2 more answers

A mixture can be classified as a solution, suspension, or colloid based on the

atroni [7]

The best answer choice here is B. =)

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