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aksik [14]
3 years ago
9

Why does a 10 gram piece if copper take up more space than a 10 gram piece of gold

Physics
1 answer:
algol [13]3 years ago
7 0

Answer:

because the mass of the copper is higher than the mass of the gold.

Explanation:

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An Ethernet cable is 4.15 m long. The cable has a mass of 0.210 kg. A transverse pulse is produced by plucking one end of the ta
kobusy [5.1K]

Answer:

95.3 N

Explanation:

The tension in the cable is found by the equation:

T=\mu v^2

Where \mu is the mass density, and v is velocity.

First we find mass density:

\mu =\frac{m}{L} --> m is mass: m=0.21kg and L is length of the cable: L=4.15m, so:

\mu=\frac{0.21kg}{4.15m} =0.0506kg/m

And the velocity:

v=\frac{distance}{time} =\frac{d}{t}

the time is t=0.765s and in that time the pulse went down and back along the cable 4 times, if one time down and back is:

2*4.15m=8.3m,

four times this path is:

4*8.3m=33.2m

thus, the velocity is:

v=\frac{distance}{time} =\frac{33.2m}{0.765s}=43.4m/s

And with this data we can now calculate the tension:

T=(0.0506kg/m)(43.4m/s)^2\\T=95.3N

The tension is 95.3N

8 0
3 years ago
A heat engine is designed to do work. This is possible only if certain relationships between the heats and temperatures at the i
ryzh [129]

Answer: option D

Explanation: let us first define an heat engine.

An heat engine is that device that converts partly heat energy into mechanical energy.

Inside the heat engine is a substance that undergoes compression and expansion, intake and outtake of heat, this is known as a working substance.

For heat engines to work perfectly, the working substance has to take a substantial large amount of heat energy from a source, this source is the hot reservoir, the amount of heat energy given out by this reservoir is Qh and the temperature at this region is Th. The heat from the hot reservoir is accepted by the working substances and sent to a region that will discard it out, this region is known as the cold reservoir and the heat energy at this point is Qc and temperature is Tc.

Judging by the direction of heat flow, heat energy moves from hot reservoir to the cold reservoir for the heat engine to work perfectly fine, hence Qh must be greater than Qc and Th must be greater than Tc.

Hence Qh>Qc and Th>Tc

5 0
3 years ago
how many miles can you get on one tank of gas if yout tank holds 18 gallons and you get 22miles per gallon
yaroslaw [1]
Well to find the total miles what I would do is 18 x 22 which would equal 396 so the answer would be: You can go 396mi with a car that gets 22 mpg* and holds 18 gallons

*Mpg=Miles per gallon

8 0
4 years ago
A particular spherical-shaped fruit has a spherical seed, and the rest of the fruit is edible. The radius of the fruit is 3 time
notsponge [240]

Answer:

<u>2600 cubic centimeters</u>

Explanation:

Volume of the edible fruit is equal to :

⇒ Volume (fruit) - Volume (seed)

⇒ 4/3π(3r)³ - 4/3πr³

⇒ 27 x 4/3πr³ - 4/3πr³

⇒ 100 (27 - 1)

<u>⇒ 2600 cubic centimeters</u>

8 0
2 years ago
Which of the following describes the bending of light due to a change in its speed?
zloy xaker [14]
The Answer is This sounds like refraction.
5 0
3 years ago
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