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deff fn [24]
3 years ago
14

An unknown substance is tested and found to have the following physical properties: brittle fair conductor of electricity dull (

not shiny) The substance is most likely a _____. metal metalloid nonmetal cannot be determined without more data
Physics
2 answers:
nikklg [1K]3 years ago
6 0
The answer is <span>metalloid </span>

White raven [17]3 years ago
6 0

Answer:

Metalloid

Explanation:

Metals are good conductors of electricity and are generally shiny.

Metalloids are the elements of the periodic table that have properties of both metals and non metals. They may be shiny or dull. They are brittle and are fair conductors of electricity.

Non metals are dull, do not conduct electricity and brittle.

Hence the substance is most likely a metalloid.

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A hungry monkey is sitting at the top of a tree 69 m above ground level. A person standing on the ground wants to feed the monke
sasho [114]

Answer:

Well if you want to be sure you should just throw it to the ground so then when he lands he can catch it.

If the cannon throws the banana with the same force the monkey falls

(m.g=Fz <=> m.9,81N/kg=...N).

Then the throw will slow down because of the gravitational pull.

Because the banana cannon is selfmade you can choose what mass the bananas in question have, so let that be the same as the monkeys.

The monkey falls with the speed of 9,81m.s => so it takes the monkey 7,1s to land.

If the cannon can shoot the banana at the same speed the monkey falls then they would cross in the middle.

So to do so you need to throw the bananas with a speed of at least 9,81m.s

Soo ... throw them with a force of that is greater then the gravitational pull and things will work out.

I'm sorry I don't know why I wrote all of this irrelevant information it's 2:21 right now and I'm tired.

kind regards

4 0
3 years ago
Which nasa program of unmanned probes, which is a synonym for an innovator, were the first to visit the outer planets and the fi
aksik [14]
The synonym for innovator and a NASA program for unmanned probes is Pioneer. Pioneer 10, launched in 1972. and Pioneer 11 launched in 1973. were the first probes that visited the outer planets and went beyond Pluto, Kuiper belt and into interstellar space. They both carry the gold-anodized aluminum plaque with naked human male and female and a map to Earth, designed by Carl Sagan, in case they are found by an extraterrestrial civilization outside the Solar system. 
6 0
3 years ago
A straight 2.20 m wire carries a typical household current of 1.50 A (in one direction) at a location where the earth's magnetic
Y_Kistochka [10]

A) Upward

In order to find the direction of the magnetic force on the wire, we can use the right-hand rule: the index finger, the middle finger and the thumb of the right hand must be placed all of them perpendicular to each other.

So we have:

- Index finger: direction of current in the wire (from west to east)

- Middle finger: direction of magnetic field (from south to north)

- Thumb: direction of the force --> so it will be upward

So, the force will point upward.

B) 1.82\cdot 10^{-4}N

The magnitude of the force exerted by the magnetic field on the wire is given by

F=ILB

where

I = 1.50 A is the current in the wire

L = 2.20 m is the length of the wire

B=0.550 G = 0.55 \cdot 10^{-4}T

Substituting into the equation, we find

F=(1.50 A)(2.20 m)(0.55 \cdot 10^{-4} T)=1.82\cdot 10^{-4}N

7 0
3 years ago
7. What type of mineral can scratch glass, but cannot scratch steel?
zimovet [89]

The answer is (D) Fluorite

3 0
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________ is the amount of mass in a given volume.
disa [49]
Density is the amount of mass in a given volume

8 0
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Read 2 more answers
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