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WARRIOR [948]
3 years ago
15

What is the acceleration of a car that is going at a steady speed of 60 mph?

Physics
1 answer:
PilotLPTM [1.2K]3 years ago
8 0

Answer:

0

Explanation: you are only accelerating if you are slowing down, speeding up, or changing direction

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A temperature of a 0.349 kg sample of copper decreases from 87.0 °C to 21.0 °C. How much heat
Arte-miy333 [17]

We have that heat flow out of the copper sample  is mathematically given as

Q=8.86809J

<h3> Heat flow</h3>

Question Parameters

  • A temperature of a 0.349 kg sample of copper
  • decreases from 87.0 °C to 21.0 °C.

Endothermic Reaction

It is common knowledge that an endothermic reaction is one where the system absorbs heat energy from the <em>environs</em>.

Exothermic Reaction

An exothermic reaction is one where the system releases heat energy to the <em>environs</em>.

Generally the equation for Heat   is mathematically given as

Q=mCdt\\\\Therefore\\\\Q=0.349*0.385*(87-21)

Q=8.86809J

For more information on temperature visit

brainly.com/question/15267055

7 0
2 years ago
The solar system involves the revolution of two planets around it.true/false.​
zhuklara [117]

Answer:

false

Explanation:

all planets revolve around the solar system

hope this is clear enough answered

3 0
3 years ago
ANSWER ASAP What happens to a circuit’s resistance (r) , voltage (v) , and current (l) when you decrease the length of the wire
sertanlavr [38]

Answer:A

Explanation:i just took the test

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