3 years ago

Fireworks change _ into and ______ energy.

Physics

1 answer:

Liula [17]3 years ago

4 0

Fireworks change chemical into thermal and radiant energy

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I need to fill the gaps

andriy [413]

Answer:

1. combustion

2. oxygen

3. CO²

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3 years ago

A stone is dropped from rest from the top of a cliff into a pond below. If its initial height is 10 m, what is its speed when it

Brut [27]

Answer:

14 m/s

Explanation:

The motion of the stone is a free fall motion, so an accelerated motion with constant acceleration g = 9.8 m/s^2 towards the ground. So, we can use the following SUVAT equation:

$v^2 -u^2 = 2gh$

where

v is the final speed of the stone as it reaches the water

u = 0 is the initial speed

g = 9.8 m/s^2 is the acceleration

h = 10 m is the distance covered by the stone

Solving for v, we find

$v=\sqrt{u^2+2gh}=\sqrt{0+2(9.8 m/s^2)(10 m)}=14 m/s$

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3 years ago

What is the next step if the data from an investigation do not support the original hypothesis? A. The data are revised to suppo

Leno4ka [110]

I believe the answer is D. <span>The hypothesis is revised and another experiment is conducted.</span>

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3 years ago

Read 2 more answers

Why is Tycho Brahe often called “the greatest naked-eye astronomer” of all time?

riadik2000 [5.3K]

Answer:Explained Below

Explanation:

Tycho Brahe saw a super nova which inspired him to study astronomy.His observations are 5 times more accurate than other astronomers of his time and thus he was given a private island to study about astronomy .He made most accurate naked eye measurements ever.

So he can be said to be the "greatest naked eye astronomer of all time"

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3 years ago

Which of these statements best describes how energy is transferred when an object experiences friction?

Slav-nsk [51]

<h2>Answer:</h2><h2> b hopefully this helps you with work </h2>

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3 years ago

Fireworks change _____ into ______ and ________ energy.

Fireworks change _ into and ______ energy.