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nikdorinn [45]
3 years ago
13

Little is known about much of earth’s early history because ____.

Physics
2 answers:
algol [13]3 years ago
8 0

the answer is D) all of the above

denis23 [38]3 years ago
7 0
The correct answer is D
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You have a motion security light by your door cat runs across the in the light turns on what is the input of the system and what
Neporo4naja [7]
A motion security line is a system that is used to detect motion.
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5 0
3 years ago
Lighting a match changes chemical energy into heat and light. The total amount of energy _____.
Mariulka [41]
Hello.

The answer is <span>remains the same.

</span>The total amount of energy stays the same because the 1st Law of Thermodynamics states that energy can neither be created nor destroyed, it can only change forms. <span>So the chemical energy is just being converted into heat and light.
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Have a nice day
8 0
3 years ago
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Which sentence states Newton’s third law?
Katyanochek1 [597]
Each object exerts a force equal to and in the opposite direction of the other.
8 0
3 years ago
_ NaBr + __ H3PO4 → ___ Na3PO4 + __ HBr
algol [13]

Answer:

The balanced equation is 3NaBr+1H3PO4 ----> 1Na3PO4 + 3HBr

This is a double replacement because you are switching both the Na and the Hydrogen.

Explanation:

3 0
3 years ago
When two objects collide and stick together, what will happen to their speed, assuming momentum is conserved?
sladkih [1.3K]

Answer:

When two objects collide and stick together, what will happen to their speed, assuming momentum is conserved? They will move at the same velocity as whichever object was fastest initially. They will move at the same velocity of whichever object was slowest initially.

Explanation:

7 0
3 years ago
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