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4 years ago

Which of these follows from Newton's laws about the energy of a moving object?

1 answer:

6 0

Assuming that this is referring to the same list of options that was posted before with this question, the best response is the one having to do with intertia.

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How do you think the particles in solid silver are arranged? Explain your reasoning.

Fantom [35]

Answer:

How does the particle model of matter describe solids, liquids and gases? How does the ... You will see that they are packed in a regular arrangement. ... Their particles are free to move around, filling the spaces left by other particles. Look at ...

Explanation:

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3 years ago

Read 2 more answers

If you could travel 900 meters in 55 seconds, what is your speed? (Answer in details=brainliest)

Alika [10]

Answer:

The rate of change of distance is called speed it can also be defined as distance travelled per unit time,from these definition you can tell that the formula will be

speed=distance/time

in this question the distance is 900meters and the time is 55seconds therefore the speed will be:

s=900meters/55seconds

=16.36m/s

I hope this helps

7 0

3 years ago

A man travels 8,000 meters in 20 mins how fast is he going

Elden [556K]

Speed = 8000m/20min = 400m/min

Convert meters/min to meters/second.
60seconds in 1minute:
400m/60sec = 6.67m/s

Speed is: 6.67m/s

5 0

3 years ago

Pedro is building a model motor. He would like the motor to be more powerful. Which of the following would best help him increas

Ratling [72]

The answer is B because that that will make it more powerful but less lasting.

7 0

3 years ago

The oven draws 1100 W of power, and you have determined that it heats with an efficiency of 51%. Using this information, determi

LiRa [457]

Answer:

134.75935 seconds

Explanation:

m = Amount of water = 240 mL

c = Specific heat of water = 4.2 J/mL °C

$\Delta T$ = Change in temperature = $100-25=75$

t = Time taken

P = Power = 1100 W

E = Pt

Efficiency = 51 %

So, Energy = 0.51Pt

As energy is conserved

Q = 0

$\\\Rightarrow -mc\Delta T+E=0\\\Rightarrow -mc\Delta T+Pt=0\\\Rightarrow -240\times 4.2(100-25)+0.51\times 1100t=0\\\Rightarrow t=\frac{240\times 4.2(100-25)}{0.51\times 1100}\\\Rightarrow t=134.75935\ s$

The it takes to raise the temperature is 134.75935 seconds

6 0

4 years ago