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Digiron [165]
3 years ago
9

What can you conclude about plastic and copper from the observations given above?

Physics
1 answer:
ipn [44]3 years ago
5 0
What are the "observations above" in this question?
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Define fundamental unit ? write its two example. ​
stealth61 [152]

the International System of Units, the fundamental units are: The meter (symbol: m), used to measure length. The kilogram (symbol: kg), used to measure mass. The second (symbol: s), used to measure time. The ampere (symbol: A), used to measure electric current.

8 0
3 years ago
A bus starts to move from rest. If its velocity becomes 90 km/hr after 8 seconds, calculate its acceleration.
a_sh-v [17]

Answer:

The acceleration is 11.25 km/hr

Explanation:

Divide the velocity over time to find the acceleration. The bus is accelerating 11.25 km/hr per second in the range of 8 seconds

7 0
3 years ago
Which one is correct and why?​
Gelneren [198K]

'A' and 'C' are exactly the same circuit, except the voltmeter's terminals are flipped.

'A' is the correct way to hook everything up.

If you start at the positive terminal of the battery, and follow the flow of current through the circuit and around to the negative terminal, you're following the path where the voltage gets lower and lower and lower all the way.

So each time you come to any device in the circuit ... whether it's a resistor or a meter ... you would be hitting the positive side of it first, and then the voltage where you come out on the other side of it would be lower.  

So the left side of the resistor is more positive, and the right side is more negative.  The voltmeter is connected correctly in 'A', but it's backwards in 'C'.  If you connect the voltmeter like in 'C' and turn things on, the voltmeter will try  to go <em>down</em> from zero.  You can't read the number on it, and It's possible that the voltmeter might be damaged.  

6 0
3 years ago
Radio waves travel at the speed of light, which is 3.00 u 108 m/s. How many kilometers will radio messages travel in exactly one
egoroff_w [7]

Answer:                

Distance traveled will be 9.462\times 10^{12}km

Explanation:

We have given speed of the light v=3\times 10^8m/sec

We have to find the distance traveled by light in 1 year

We know that 1 year = 8760 hour

And 1 hour = 60×60 = 3600 sec

So 1 year =8760\times 3600=3.154\times 10^{7}sec

We know that distance = speed × time

So distance traveled by light in one year =3.154\times 10^7\times 3\times 10^8=9.462\times 10^{15}m

We have to fond the distance in km

As we know that 1 km = 1000 m

So 9.462\times 10^{15}m=\frac{9.462\times 10^{15}}{1000}=9.462\times 10^{12}km

8 0
3 years ago
Read 2 more answers
Which planets receive more of the Sun's concentrated light?
Ilia_Sergeevich [38]

Answer: Mercury is closest to the Sun and receives more of the Sun's concentrated light.

Explanation: I hope this helps :]

7 0
3 years ago
Read 2 more answers
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