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2 years ago

13

What an object conveys about the important events, advancements, and people of a specific time period is called the

1 answer:

oksian1 [2.3K]2 years ago

5 0

The information being conveyed by an object about the important events, advancements, and people of a specific time period is known as: C. historical significance.

<h3>What is historical significance?</h3>

Historical significance can be defined as an information that is being conveyed by an artistic object about the important events, advancements, technology, phenomenon, and people that have existed and occurred over a specific time period

This ultimately implies that, historical significance refers to the information that an object conveys with respect to the important events, advancements, technology, and people of a specific time period.

Read more on historical significance here: brainly.com/question/1020328

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What is the difference between a group and a period

Digiron [165]

Periods<span> going left to right. The periodic table also has a special name </span>for<span> its vertical columns. Each column </span>is<span> called a </span>group. The elements in eachgroup<span> have the same number </span>of<span> electrons </span>in the<span> outer orbital.</span>

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3 years ago

If there are oncoming cars to the left of you and a child on a bike to the right, what is the correct action to take

tankabanditka [31]

Answer:

Give the child a lot of room to your side, which may mean moving closer to the oncoming vehicles.

Explanation:

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3 years ago

How long will it take a 400 W engine to lift a 100 N object up to a height of 80 m?

Norma-Jean [14]

<h3>Answer:</h3>

20 seconds

<h3>Explanation:</h3>

<u>We are given</u>;

Power of the engine as 400 watts
Force as 100 N
Distance the object is lifted up as 80 m

We are required to determine the time taken.

We need to know that power is the rate of work done

Therefore;

Power = Work done ÷ time

But, work done = Force × distance

Therefore; In this case;

Work done = 100 N × 80 m

= 8000 Joules

Since , Power = Work done ÷ time

Then, time = Work done ÷ Power

Thus;

Time = 8000 J ÷ 400 W

= 20 s

Therefore, the time taken by the engine to lift the object is 20 seconds

4 0

4 years ago

Read 2 more answers

A car reversing at -7.2 m/s has a displacement of -21.6 m. How long did this take?

weeeeeb [17]

Answer:

Time=distance/velocity

T=S/V

T=(-21.6)/(-7.2)

Time=3seconds

4 0

3 years ago

Deimos completes one (circular) orbit of Mars in 1.26 days. The distance from Mars to Deimos is 2.35×107m. What is the centripet

Akimi4 [234]

Answer:

The centripetal acceleration of Deimos is $0.077m/s^{2}$ .

Explanation:

The centripetal acceleration is defined as:

$a = \frac{v^{2}}{r}$ (1)

Where v is the velocity of Deimos and r is the orbital distance.

Notice that is necessary to determine the velocity first.

The speed of the Deimos can be found by means of the Universal law of gravity:

$F = G\frac{M \cdot m}{r^{2}}$ (2)

Then, replacing Newton's second law in equation 2 it is gotten:

$m\cdot a = G\frac{M \cdot m}{r^{2}}$ (3)

However, a is the centripetal acceleration since Deimos almost describes a circular motion around Mars:

$a = \frac{v^{2}}{r}$ (4)

Replacing equation 4 in equation 3 it is gotten:

$m\frac{v^{2}}{r} = G\frac{M \cdot m}{r^{2}}$

$m \cdot v^{2} = G \frac{M \cdot m}{r^{2}}r$

$m \cdot v^{2} = G \frac{M \cdot m}{r}$

$v^{2} = G \frac{M \cdot m}{rm}$

$v^{2} = G \frac{M}{r}$

$v = \sqrt{\frac{G M}{r}}$ (5)

Where v is the orbital speed, G is the gravitational constant, M is the mass of Mars, and r is the orbital radius.

$v = \sqrt{\frac{(6.67x10^{-11}N.m^{2}/kg^{2})(6.39x10^{23}kg)}{2.35x10^{7}m}}$

$v = 1346m/s$

Finally, equation 4 can be used:

$a = \frac{(1346m/s)^{2}}{2.35x10^{7}m}$

$a = 0.077m/s^{2}$

Hence, the centripetal acceleration of Deimos is $0.077m/s^{2}$ .

7 0

3 years ago