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3 years ago

Is metal a matter or molecules

Physics

2 answers:

timurjin [86]3 years ago

5 0

Answer:

Matter.

Explanation:

I really hope it helps u Mate ❤

miss Akunina [59]3 years ago

4 0

Matter
Brainliest please

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A U-shaped tube open to the air at both ends contains some mercury. A quantity of water is carefully poured into the left arm of

Gekata [30.6K]

Answer:

a) $P=2450\ Pa$

b) $\delta h=23.162\ cm$

Explanation:

Given:

height of water in one arm of the u-tube, $h_w=25\ cm=0.25\ m$

Gauge pressure at the water-mercury interface,:

$P=\rho_w.g.h_w$

we've the density of the water $=1000\ kg.m^{-3}$

$P=1000\times 9.8\times 0.25$

$P=2450\ Pa$

Now the same pressure is balanced by the mercury column in the other arm of the tube:

$\rho_w.g.h_w=\rho_m.g.h_m$

$1000\times 9.8\times 0.25=13600\times 9.8\times h_m$

$h_m=0.01838\ m=1.838\ cm$

Now the difference in the column is :

$\delta h=h_w-h_m$

$\delta h=25-1.838$

$\delta h=23.162\ cm$

7 0

3 years ago

An aeroplane flew at 600mph for 7 hours. How far did it travel?

____ [38]

Answer:

The aeroplane flew 4200 miles for 7 hours.

600 times 7 is 4200.

6 0

3 years ago

If Faraday had used a more powerful battery in his experiments with electromagnetic induction, what effect would this have had o

dmitriy555 [2]

Answer:

The value of current generated would increase.

Explanation:

Electromagnetic induction is the process by which an electromotive force is induced due to a variation of magnetic field.

The induced current is directly proportional to rate at which the coil cuts the magnetic field. Using more powerful battery in the experiment would increase the rate at the the coil cuts the magnetic field, therefore increasing the rate of variation in the magnetic field. This effect would cause a greater deflection on the galvanometer's scale, showing an increase in the current generated.

This experiment proves that an alternating current can be produced from magnetic field.

6 0

4 years ago

Ikg.

Tcecarenko [31]

Answer:

The mass of G1 at all times during this trial was 0.5 kg.

The velocity of G1 + G2 after the collision was -1.24 m/s.

The momentum of G1 after the collision was -2.10 kg · m/s.

Explanation:

i got it right

6 0

3 years ago

The current through a certain heater wire is found to be fairly independent of its temperature. If the current through the heate

irina [24]

Answer:

Explanation:

energy = power x time, and power = resistance x current ^2. 2^2 = 4.

5 0

3 years ago