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LekaFEV [45]
3 years ago
8

What do you know about stars?

Physics
2 answers:
Gekata [30.6K]3 years ago
7 0
Blue stars are hotter than red stars

And the closest star to earth is our sun
Readme [11.4K]3 years ago
4 0
A star's life begins with the gravitational collapse of a gaseous nebula, when a stars mass is greater that .4 times our sun expands to become a red giant.
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X + 10 times X = 50 what is the answer
tia_tia [17]

Answer:

4.54

Explanation:

X+10X=50

11X=50

X=4.54#

<h2>please follow me...</h2>
3 0
3 years ago
Riders in an amusement park ride shaped like a Viking ship hung from a large pivot are rotated back and forth like a rigid pendu
erica [24]

Answer:

a)  v = 16.57 m / s, b)  a = 19.6 m / s², d)    N = 1.76 10³ N,     N / W = 3

Explanation:

This exercise looks interesting, but I think you have some problem with the writing, the questions seem a bit disconnected from the initial text.

Let's answer the questions.

a) For this part we can use energy considerations.

Starting point. The upper part of the trajectory indicates that the arm is horizontally

          Em₀ = U = m g h

in this case h = r

Final point. For lower of the trajectory

          Em_f = K = ½ m v²

as they indicate that there is no friction

         Em₀ = em_f

         mgh = ½ m v²

         v = \sqrt{2gh}

let's calculate

        v = \sqrt{2 \ 9.8 \ 14.0}

         v = 16.57 m / s

b) the centripetal acceleration has the formula

           a = v² / r

           a = 16.57² / 14.0

           a = 19.6 m / s²

c) see attached where the diagram is

where N is the normal and w the weight

d) let's use Newton's second law

               N-W = m a

               N - mg = m ar

               N = m (g + a)

let's calculate

               N = 60.0 (9.8 + 19.6)

               N = 1.76 10³ N

the relationship with weight is

              N / W = 1.76 10³/( 60 9.8)

              N / W = 3

normal is three times greater than body weight

e) the answer is reasonable since by Newton's first law the body must continue in a straight line, therefore to change its trajectory a force must be applied to deflect it

6 0
2 years ago
How do some producers use sunlight to make "food"? What other resources do they require?
Talja [164]
<span>Leaves of plants absorb light from the sun.Leaves of plants also absorb the air that people breathe out, called carbon dioxide.Leaves of plants also absorb water. ...Leave</span><span>How Do Primary Producers Make Their Own Food? - Tech Alive</span><span>techalive.mtu.edu/meec/module10/Howarenutrientscycledinaschoolyardecology.htm</span>s of plants use light from the sun to turn the air people breathe out and water into glucose and oxygen. GOT IT FROM 
7 0
3 years ago
Determine the velocity of the running man with respect to car A.
olasank [31]

Answer:

A) -55  km/

hr

Explanation:

3 0
3 years ago
Read 2 more answers
A wave transfers _____ from the source outward in the direction of wave motion.
Angelina_Jolie [31]

Answer

b. energy

Explanation:

wave is a disturbance that carries energy from one particle to another particle.

4 0
2 years ago
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