PHYSICS HIGH SCHOOL

The cloud of interstellar dust and gas that forms a star is known as aA. white dwarf.
B. protostar.
C. red giant.
D. nebula.

Answers

Answer 1
Answer: D. nebula

Nebula is the cloud of interstellar dust and gas that forms a star. It is collborately shaped during colliding and collapsing of the interstellar mediums this is influenced by the gravitational attraction of the atoms and particles in the entites. Hence, there are three types of nebular namely, are classical nebula, diffuse nebula, planetary nebular and supernova remnants.

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What happens as a result of an increase in the intensity of a sound wave? -the frequency of a soundwave increases. -the velocity of the sound wave decreases. -the energy of the soundwave increases. -the amplitude of the soundwave decreases

Answers

As a result of an increase in the intensity of a sound wave, the energy of the sound wave increases!

Answer: c. The energy of the sound wave increases.

Explanation:

How do I use the equation E=MC^2 in relation to atoms to find the amount of energy of a reaction?

Answers

-- Find the mass of all the pieces before the reaction.

-- Find the mass of all the pieces after the reaction.

-- Find the difference . . . (mass before) minus (mass after)

-- If any mass is missing, either you lost track of it, or else
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what is the speed of a bobsled whose whose distance time graph indicates that it traveled 113 m in 30 s

Answers


Speed  =  (distance traveled)  /  (time to travel the distance)

             =       (113 m)          /          (30 sec)

             =           (113/30)    m/sec

             =               3.767 m/s    (rounded)

Which force causes a wagon to speed up as it rolls down a hill?

Answers

Answer: The correct answer is force of gravity.

Explanation:

Gravity is the force with which one body attracts the other body.

It goes down a hill with the increase in the kinetic energy. The kinetic energy is due to the motion of a wagon.

At the hill the gravity is lesser in comparison to the gravity on the surface of the earth.

When a wagon rolls down a hill it speeds up. Here, the earth attracts the wagon with the force of gravity. It accelerates down a hill with an acceleration due to gravity.

Gravity is the only one helping it.

Structures that are especially susceptible to wind damage are?

Answers

i know the answer is manufactured homes

If a ball was thrown upward at 46.3 m/s how long would the ball stay in the air

Answers

V = Vo + a.t

The ball is against the vector of gravity. Then, the gravity will be negative.

0 = 46,3 + (-9.8).t \n t = (46.3)/(9.8) \n t \approx 4.72

The ball will stop in the air after approx. 4.72 seconds. And will take the same time to hit the ground.

It will stay approx. 9.44 seconds in the air.
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