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4 years ago

3 properties that metals have in common

Physics

2 answers:

aleksley [76]4 years ago

6 0

Answer:

(1) malleable

(2) Ductile

(3) Good conductor of heat and electricity

Explanation:

(1) malleable: this means that they can be hammered into sheet

(2) Ductile: this means that they can be drawn into a thin wire

(3)they are good conductor of heat and electricity

Gemiola [76]4 years ago

5 0

Answer:

Luster: Metals are shiny when cut, scratched, or polished.

Malleability: Metals are strong but malleable, which means that they can be easily bent or shaped. ...

Conductivity: Metals are excellent conductors of electricity and heat.

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What are solar winds made of?

Molodets [167]

Answer:

Charged particles

Explanation:

It's correct

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3 years ago

An astronaut weighs 8.00 × 102 newtons on the sur- face of Earth. What is the weight of the astronaut 6.37 × 106 meters above th

kolbaska11 [484]

Answer:

$mg=200.4 N$ .

Explanation:

This problem can be solved using Newton's law of universal gravitation: $F=G\frac{m_{1}m_{2}}{r^{2}}$ ,

where F is the gravitational force between two masses $m_{1}$ and $m_{2}$ , $r$ is the distance between the masses (their center of mass), and $G=6.674*10^{-11}(m^{3}kg^{-1}s^{-2})$ is the gravitational constant.

We know the weight of the astronout on the surface, with this we can find his mass. Letting $w_{s}$ be the weight on the surface:

$w_{s}=mg$ ,

$mg=8*10^{2}$ ,

$m=(8*10^{2})/g$ ,

since we now that $g=9.8m/s^{2}$ we get that the mass is

$m=81.6kg$ .

Now we can use Newton's law of universal gravitation

$F=G\frac{Mm}{r^{2}}$ ,

where $m$ is the mass of the astronaut and $M$ is the mass of the earth. From Newton's second law we know that

$F=ma$ ,

in this case the acceleration is the gravity so

$F=mg$ , (<u>becarefull, gravity at this point is no longer</u> $9.8m/s^{2}$ <u>because we are not in the surface anymore</u>)

and this get us to

$mg=G\frac{Mm}{r^{2}}$ , where $mg$ is his new weight.

We need to remember that the mass of the earth is $M=5.972*10^{24}kg$ and its radius is $6.37*10^{6}m$ .

The total distance between the astronaut and the earth is

$r=(6.37*10^{6}+6.37*10^{6})=2(6.37*10^{6})=12.74*10^{6}$ meters.

Now we can compute his weigh:

$mg=G\frac{Mm}{r^{2}}$ ,

$mg=(6.674*10^{-11})\frac{(5.972*10^{24})(81.6)}{(12.74*10^{6})^{2}}$ ,

$mg=200.4 N$ .

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3 years ago

An insect crawls 4 m east along a hiking path in

alexandr1967 [171]

The insect's velocity is 0.2 meter/second along east.

<h3>What is velocity?</h3>

The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.

Given parameters:

An insect crawls 4 m east along a hiking path.

Time taken by it: t = 20 seconds.

We have to fine: the insect's velocity, v =?

So, the magnitude of velocity: v= 4/20 meter/second = 0.2 meter/second.

And the direction velocity is along east.

Hence, the insect's velocity is 0.2 meter/second along east.

Learn more about velocity here:

brainly.com/question/18084516

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2 years ago

Một chất điểm chuyển động trong mặt phẳng Oxy với phương trình :<br> { = 2 + 10

In-s [12.5K]

Answer:

plz write your questions in English

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3 years ago

An input force is a Push or pull that ________________________ to the machine

Jlenok [28]

Answer:

is applied to

Explanation:

An input force is push or pull that is applied to the machine and causes work to be done on it.

Input force for every machine should be lesser than the output force. The output force is the resulting force which produces work.

The force produced by any machine is a function of the input force and the design of the machine.

Any force applied to a machine is the input force.

8 0

4 years ago

3 properties that metals have in common​

3 properties that metals have in common