Q3. At an altitude of 6679 km above the center of the Earth, the

International Space Station can complete one orbit in 1.5 hours.

Determine the average speed of the ISS. Explain why you should

calculate speed in this case, and not velocity.

The type of galaxy which has arms that contain sites of active star formation and start close to a bulge in the center is: D. normal spiral.

A star can be defined as a giant celestial (astronomical) object that is made up of a luminous sphere of plasma bounded together by its own gravitational force.

Generally, a star comprises two (2) main interstellar hot gases and these include:  

I. Hydrogen (H).

II. Helium (He).

A galaxy refers to a collection of billions of stars, which are existing independently.

This ultimately implies that, the greatest number of stars are found in a galaxy.

According to astronomers, the galaxy is classified into four (4) main categories and these are:

Furthermore, spiral galaxies are divided into two (2) major groups such as:

I. Barred spiral.

II. Normal spiral.

A normal spiral is typically made up of arms containing sites of active star formation and it start close to a bulge in the center.

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Answer:

D) normal spiral

Explanation:

Whoever answered it practically wrote a life story. There's no need for an explanation; just get to the point and tell us the answer. But anways, the answer is D.

Answer:

Control Variable

Explanation:

A control variable is a variable that is held constant throughout the cause of an experiment, in order to test accurately the relationship between the dependent and the independent variables. The control variable, which is amount of water needed by the plants in this case, has the property of affecting the growth of the daisies, hence if it is not held constant, the result of the experiment might not be accurately attributed to the light source alone.

Therefore, to say with certainty that the difference seen in both categories of plants was from the difference in lighting alone, other variables (amount of water, type of soil, temperature etc.) has to be held constant

Answer:

the rocks have different layers to them which can contain fossils and different kinds of rocks

Answer:

the ball travels 0.85 miles per second

Explanation:

Answer:

0.85

Explanation:

Answer:

Hi there!

Your answer is:

The handle is made from a different material than the rest of the pot because you want to be able to safely move & touch the handle without getting burnt. The pot is made of conductors, like metal, to help it get hot quickly and cook evenly. You need to be able to touch the handle without being in danger, so the handle is made of an insulator, like wood, which doesn't get hot easily

I hope this helps!

Answer: the handle is made up of different material than the rest of the pot because the handle can conduct heat into your hand if its the same material.

[tex]\huge\mathfrak\red {Answer:}[/tex]

Pressure within a liquid depends only on the

The pressure exerted by such a static liquid increases linearly with increasing depth.

[tex]\mathfrak\purple {Hope\: this\: helps\: you...}[/tex]

Answer:

Explanation:

C. Can be used to measure the volume of solids

If I was of help mark as brainliest I am 1 short

Answer:

is not always accurate and may yield incorrect results if the matter is soluble in liquid.

Answer:

Option (C)

Explanation:

From the graph attached,

Position of a car is changing with time.

Let the two points (1, 5) and (2, 10) define the positions of a car at the different moment of time.

Since, speed = [tex]\frac{\text{Distance traveled by the car}}{\text{Time taken}}[/tex]

                      = [tex]\frac{10-5}{2-1}[/tex]

                      = 5 meter per second

Speed of the car = slope of the line on the graph

Since slope of the line is constant, speed of the car will be constant.

Therefore, Option (C) will be the answer.

Answer:

3.844 x 10 to the 5th power

Explanation:

≈ 0.26 cm³

Hi there !

Gold is a metal with a very high density.

The density of gold is higher than that of lead.

Density(gold) = 19300 kg/m³ = 19.3 g/cm³

19.3 g ............ 1 cm³

5 g ..................x cm³

x = 5g×1cm³/19.3g = 0.2590 cm³ ≈ 0.26 cm³

Good luck !

Answer:

there are a lot so imma just say a few movement,moving,shifting,to and from

Explanation:

Hope this helps

Answer:

Silicon was touted as the revolutionary material that can do wonders in the tech industry.

Explanation:

Answer:

The answer is

Explanation:

The kinetic energy of an object can be found by using the formula

[tex]KE = \frac{1}{2} m {v}^{2} [/tex]

where

m is the mass of the object

v is the speed or velocity

From the question

m = 1500 kg

v = 25 m/s

The kinetic energy of the object is

[tex]KE = \frac{1}{2} \times 1500 \times {25}^{2} \\ = 750 \times 625[/tex]

We have the final answer

Hope this helps you

Answer: Air

Explanation:

Roffns dn b bdd

Answer:

renewable sources

Explanation:

Answer:

[tex] \boxed{\sf Distance \ travelled = 62.5 \ m} [/tex]

Given:

Initial velocity (u) = 25 m/s

Final velocity (v) = 0 m/s (Rest)

Time taken (t) = 5 seconds

To Find:

Distance travelled by car (s)

Explanation:

From equation of motion of object moving with uniform acceleration in straight line we have:

[tex] \boxed{ \bold{s = (\frac{v + u}{2} )t}}[/tex]

By substituting value of v, u & t in the equation we get:

[tex] \sf \implies s = ( \frac{0 + 25}{2} ) \times 5 \\ \\ \sf \implies s = \frac{25}{2} \times 5 \\ \\ \sf \implies s = 12.5 \times 5 \\ \\ \sf \implies s = 62.5 \: m[/tex]

[tex] \therefore[/tex]

Distance travelled by car (s) = 62.5 m

The distance  car travel during that time is 62.5 meter.

Acceleration is the rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates.

Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.

Initial velocity (u) = 25 m/s

As the car becomes rest, final velocity (v) = 0 m/s (Rest)

Time taken (t) = 5 seconds.

The deceleration of the car: a = (initial speed - final speed)/time interval

= ( 25 m/s - 0 m/s)/5 second

= 5 m/s²

The distance  car travel during that time = ut - at²/2

= 25 × 5.0 meter - (5×5²/2) meter

= 62.5 meter.

Hence, the distance  car travel during that time is  62.5 meter.

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Answer: I do believe the answer is D if not then sorry and let others know in the comment section

The doll experiment did not suggest the African Americans felt more secure and positive because of school segregation. The correct option is D.

School segregation in the United States is the segregation of students based on their colors and caste. An institution can be predominantly owned by the black and only black students can study into it.

The Americans who are black belonged to the African continent. They felt more safety and secure by studying into this segregated school.

Thus, the correct option is D.

Learn more about school segregation.

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Answer:

(a) 25 m

(b) 75 m

Explanation:

Given that the jogger runs at a constant rate of 10.0 m every 2.0 seconds.

So, the speed of the jogger,

[tex]v=\frac{10}{2}=5m/s\;\cdots(i)[/tex]

Let d be the distance covered by him in time, t s.

As distance=(speed) x (time)

So, [tex]d=vt[/tex]

From equation (i)

[tex]\Rightarrow d=5t\;\cdots(ii)[/tex]

As the jogger starts from origin, so, the distance, [tex]d[/tex], also represents the position of the jogger at the time [tex]t[/tex] s.

The position-time graph has been shown.

(a) From equation (ii), for t=5.0 s

[tex]d=5\times 5=25 m[/tex]

So, the jogger is at a distance of 25 m from the origin.

(b) Similarly, for t=15.0 s

[tex]d=5\times 15=75 m[/tex]

So, the jogger is at a distance of 75 m from the origin.

Answer:

-0.05

Explanation:

-3.9/-3.9= o  and -3.9/78= -0.05

Answer:

20m/s

Explanation:

Speed = distance / time

Speed = 400/20

Speed = 20

Answer:

4

Explanation:

you have to divide the velocity by time so 40 divided by 10 and the answer should be 4

Answer:

Its acceleration is 4 m/s^2.

Answer:

aerobic is the correct answer

Answer:

14. V=8

15. V=40

Explanation:

simplifying:

14. 4 32/8

V=8

15. 20 1000/50

V=40

Answer:4.0m/s^2

Explanation:

Answer:

6.743 x 10² mm

Explanation:

Answer:

1. 0.2 g/cm³.

2. 1 g/cm³.

3. 0.72 g.

Explanation:

1. Determination of the density of the bread.

Volume (V) = 2270 cm³

Mass (m) = 454 g

Density (D) =?

The density of a substance is simply defined as the mass of the substance per unit volume of the substance. It is represented mathematically as:

Density (D) = mass (m) /volume (V)

D = m/V

With the above formula, we can calculate the density of the bread as follow:

Volume (V) = 2270 cm³

Mass (m) = 454 g

Density (D) =?

D = m/V

D = 454/2270

D = 0.2 g/cm³

Therefore, the density of the bread is 0.2 g/cm³.

2. Determination of the density of water.

Volume (V) = 1 L

Mass (m) = 1000 g

Density (D) =?

Next, we shall convert 1 L to cm³. This can be obtained as shown below:

1 L = 1000 mL

1 mL = 1 cm³

1000 mL = 1000 cm³

Therefore,

1 L = 1000 mL = 1000 cm³

Therefore, 1 L is equivalent to 1000 cm³.

Finally, we shall determine the density of water as follow:

Volume (V) = 1000 cm³

Mass (m) = 1000 g

Density (D) =?

D = m/V

D = 1000 / 1000

D = 1 g/cm³

Therefore, the density of water is 1 g/cm³.

3. Determination of the mass of the block of wood.

Density (D) = 0.6 g/cm³

Volume (V) = 1.2 cm³

Mass (m) =...?

D = m/V

0.6 = m/1.2

Cross multiply

m = 0.6 × 1.2

m = 0.72 g

Therefore, the mass of the block of wood is 0.72 g.

Answer:

11.25

Explanation:

acceleration =v-u/t

=-30-15/4

=-45/4

=11.25

hope it helps

Answer:

[tex] \boxed{\sf Acceleration \ (a) = -3.75 \ m/s^2} [/tex]

Given:

Initial velocity (u) = 30 m/s

Final velocity (v) = 15 m/s

Time taken (t) = 4 seconds

To Find:

Acceleration (a) of the car

Explanation:

From equation of motion we have:

[tex] \boxed{ \bold{v = u + at}}[/tex]

By substituting value of v, u & t in the equation we get:

[tex] \sf \implies 15 = 30 + 4a \\ \\ \sf \implies 4a + 30 = 15 \\ \\ \sf \implies 4a = 15 - 30 \\ \\ \sf \implies 4a = - 15 \\ \\ \sf \implies a = - \frac{15}{4} \\ \\ \sf \implies a = - 3.75 \: m {s}^{ - 2} [/tex]

[tex] \therefore[/tex]

Acceleration (a) of the car = -3.75 m/s²

Answer:

3.4 s

Explanation:

Given:

Δy = 0 m

v₀ = 17 m/s

a = -10 m/s²

Find: t

Δy = v₀ t + ½ at²

0 m = (17 m/s) t + ½ (-10 m/s²) t²

0 = 17 m/s − (5 m/s²) t

t = 3.4 s