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Luda [366]
3 years ago
10

What is mineral called that contains usable amounts of element?

Physics
2 answers:
artcher [175]3 years ago
7 0
The correct answer is a. A mineral or combination of minerals that contains metals or other substances in usable amounts is called an ore. An ore is basically a rock that contains minerals that have important elements including metals.
MrRa [10]3 years ago
7 0

Answer:

A is the right answer

Explanation:

took the test on k12. please like and rate my comment

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How does a generator use the effect you noticed in the pickup coil to generate electrical energy? What energy transformations ar
Oksana_A [137]

Answer:

Movement of Electrons in opposite direction of the rotation of the pickup coil leads to the direction of Electrical energy ( Alternating current ).

Explanation:

For a Generator to generate electricity, Electrons that is found in the rotating coil of the Generator will experience some sort of force that makes them to start moving in a direction that is perpendicular to the direction of the rotating/pickup coil found in the Generator.

The conversion of mechanical energy (Rotation of the pickup coil ) to electrical energy takes place in the Generator

The generator makes an alternating current because electrons move in opposite direction of the rotating coil

In other to generate a Direct current using a generator we have to replace the slip rings with commutator.

6 0
3 years ago
A weak magnet can become stronger by dropping it or striking it with a hammer.<br> True Or False
Vikentia [17]
I think it is false, because why would is be stronger in a different state?

4 0
3 years ago
12. A frain moves from rest to a speed of 25 m/s in 30.0 seconds. What is its acceleration?
ziro4ka [17]
  • initial velocity=u=0m/s
  • Final velocity=v=25m/s
  • Time=t=30s

\\ \tt\longmapsto Acceleration=\dfrac{v-u}{t}

\\ \tt\longmapsto Acceleration=\dfrac{25-0}{30}

\\ \tt\longmapsto Acceleration=\dfrac{25}{30}

\\ \tt\longmapsto Acceleration=0.8m/s^2

6 0
3 years ago
When discussing distances between objects in the solar system, which term do you use?
Bond [772]
I think it's (ASTRONOMICAL UNIT)

Explanation:
It is used to compare the distances of other bodies in the Solar System, such as the Sun, the planets, comets, and asteroids.
8 0
2 years ago
Read 2 more answers
What is the acceleration of a car that goes from 0 MS to 60 MS and six seconds
Len [333]
A = Δv/Δt
a = v2-v1/t2-t1
a = 60MS - 0MS / 6 seconds
a = 60 MS/ 6 seconds
a = 10 m/s^2
8 0
3 years ago
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