Need help! Photo says all! Will mark brainliest :)
Need help! Photo says all! Will mark brainliest :) - 1

Answers

Answer 1
Answer:

Answer:

number 2!

Explanation:

Answer 2
Answer:

Answer:

2s to 4s

Explanation:

Since the graph measures acceleration over time, when the line does not move up or down is when you can see a constant velocity.


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Suppose that now you want to make a scale model of the solar system using the same ball bearing to represent the sun. How far from it would you place a sphere representing the earth? (Center to center distance please.) The distance from the center of the sun to the center of the earth is 1.496×10111.496×1011 m and the radius of the sun is 6.96×1086.96×108 m.

Answers

In this exercise we have to use the knowledge in distance, in this way we will find that the proportional distance found is:

d = 0.645 m

So from the information given in the text we find that:

  • The distance from the center of the sun to the center of the earth is 1.496*10^(11) \ m
  • The radius of the sun is 6.96*10^(8)m
  • We need to assume a radius for the ball bearing, so suppose that the radius is 3 mm  

First, we need to find in what way or manner often the radius of the brightest star exist considerable respect to the range of the ball significance, that exist given apiece following equating:

(r_a)/(r_b)= \frac{6.96*10^8}{3*10{-3}}  =2.32*10^(11)

Now, we can calculate the distance from the center of the sun to the center of the sphere representing the earth:  

d_(s) = (d_(e))/(r_(s)/r_(b)) = (1.496 \cdot 10^(11) m)/(2.32\cdot 10^(11)) = 0.645 m

See more about distance at brainly.com/question/989117

Answer:

d = 0.645 m(assuming a radius of the ball bearing of 3 mm)

Explanation:

The given information is:

  • The distance from the center of the sun to the center of the earth is 1.496x10¹¹m = d_(e)
  • The radius of the sun is 6.96x10⁸m = r_(s)

We need to assume a radius for the ball bearing, so suppose that the radius is 3 mm = r_(b).  

First, we need to find how many times the radius of the sun is bigger respect to the radius of the ball bearing, which is given by the following equation:

(r_(s))/(r_(b)) = (6.96\cdot 10^(8)m)/(3\cdot 10^(-3)m) = 2.32\cdot 10^(11)

Now, we can calculate the distance from the center of the sun to the center of the sphere representing the earth, d_(s):  

[tex] d_{s} = \frac{d_{e}}{r_{s}/r_{b}} = \frac{1.496 \cdot 10^{11} m}{2.32\cdot 10^{11}} = 0.645 m

I hope it helps you!

a boeing 747 has a total mass, including passengers and luggage, of 250,000 kg. How much force do the engines supply to achieve a take off velocity of 990 m/s in 35 seconds.

Answers


Acceleration = (change in speed) / (time for the change)

Acceleration = (990 m/s)  /  (35 sec)  =  28.29 m/s²


Force = (mass) x (acceleration)

Force  =  (250,000 kg) x (28.29 m/s²) =  7.07 million Newtons

                                                about  1.59 million pounds .

===========================================

There you have the Physics and the Math.
Does any of this resemble the real world ?
No.  The question is completely bogus.

-- Take-off speed can't be 990 m/s. 
That would be about  2,200 mph, almost 3 times the speed of sound.

-- The take-off run can't accelerate at 28.3 m/s² .
That would be almost 3 G's.  If it didn't rip the wings off of the 747,
it would surely guarantee early use of most of the passengers' barf bags.

-- The Saturn V first-stage booster that sent Apollo to the moon
had a thrust of 7.5 million pounds.  I'm pretty sure that was more
than 4.7 Boeing 747's.
 
================================

Ah hah !  I've just been handed a bulletin, or as they say nowadays,
there is breaking news !

I see that the take-off speed has been revised downward to 90 m/s.
That's right at 200 mph which seems reasonable to me, so let's go
back and do the whole thing again:


Acceleration = (change in speed) / (time for the change)

Acceleration = (90 m/s)  /  (35 sec)  =  2.57 m/s²  (about 0.26 G)


Force = (mass) x (acceleration)

Force  =  (250,000 kg) x (2.57 m/s²) =  643 thousand Newtons

                                               about  144 thousand pounds.

                                                about 1.9% of a Saturn V booster.

I like that a lot better.


A constellation is _______ that forms a pattern resembling animals, mythological characters, or objects.A. a group of meteors
B. a group of stars
C. an entire galaxy
D. one single planet

Answers

The answer is the option B. a a group of stars. So the complete sentence is "A constellation is a group of stars that forms a pattern resembling animals, mythological characters, or objects. Most names of constellations originated in ancient times and took their names from the patterns that observer could watch in the sky. Some examples of constellations are Orion, Aquarium, Cancer, etc.

Nicolaus Copernicus was considered: a heretic because his theory disagreed with the church a hero because his theory agreed with current beliefs the "Father of Astronomy" because he believed the earth was the center of the solar system

Answers

Answer:

A heretic because his beliefs disagreed with the church

Nicolaus Copernicus was considered the "Father of Astronomy" because he believed the earth was the center of the solar system. The rest of the choices do not answer the question above.

What is Earth's role in the hierarchy of organization within the universe

Answers

In the hierarchy of Organization within the universe , currently Earth placed as the 3rd Planet (after Mercury and Venus) , and the only planet that provided living organisms with enough resources to live such as water, foods, breathing air, etc.

What is the maximum temperature in a hot whirlpool to be considered safe?

Answers

Answer:

104 degrees

Never let the hot tub's water temperature get above 104 degrees Fahrenheit. For a healthy adult, a temperature of 100 degrees is regarded as safe. Young kids should use extra caution.