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Lisa [10]
3 years ago
15

What elements compose the stars and planets in the universe

Physics
1 answer:
Savatey [412]3 years ago
6 0

Well hydrogen would be the main element, as a process called nuclear fusion with both helium and hydrogen atoms occurs within stars. And planets are the products of dead stars that have burned through their supplies of hydrogen, helium, and carbon. Planets are a product of this.

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A child is holding a cup of hot tea. His mother, a physicist, warns him not to start running with the tea. According to Newton's
nalin [4]
If he stops running the tea is still going to be moving so it will spill on him.
3 0
3 years ago
To determine the height of a tall building such as Sears Tower in Chicago, Illinois a ball was dropped from the top of the build
Darya [45]

Answer:

The height of Sears Tower is 1448.5 feet.

Explanation:

<h3>We apply the free fall formula to the ball: </h3><h3>y=v_{o} *t+\frac{1}{2} *g*t^{2}</h3><h3>y: The vertical distance the ball moves at time t  </h3><h3>v_{o}i: Initial speed </h3><h3>g=Gravity acceleration=9.8*(\frac{\frac{1ft}{0.305m} }{s^{2} } )</h3>

Known information

We know that the vertical distance (y) that the ball moves in 9,5s  is equal to height of Sears Tower (h).  

Too we know that the ball is released from rest, then,v_{0}=0

Height of Sears Tower calculation:

We replace  in the equation 1 the data following;

y=h

v_{o} =0

g=32,1\frac{ft}{s^{2} }

t= 9,5s

h=0*9.5+\frac{1}{2} *32.1*9.5^{2}

h=1448.5 ft

Answer: The height of Sears Tower is 1448.5 ft

6 0
3 years ago
Kim took 5 hours to complete a journey with an average speed
monitta

Answer:110

Explanation:

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3 years ago
What is the speed of a cheetah if it takes 20 sesonds to run 300 m
natta225 [31]

the answer to your question is 15 :)

8 0
3 years ago
Part of a neutralization reaction between an acid and a base is shown below. What is the second product of the reaction?
icang [17]
Salt compound. it is a double displacement
8 0
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