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guajiro [1.7K]
2 years ago
15

Plsss help I will mark brainlist

Physics
2 answers:
gulaghasi [49]2 years ago
6 0

Metal improves conductivity since Metals usually have small amounts of valance electrons which allow smoother movement through them. Metalloids can either improve or weaken conductivity by adding or removing an electron. Non-metals have poor conductivity because their valance shell haves 4 or more valance electrons.

AKA It is B

Hope This Helps!

I used

G/O/O/G/L/E

sp2606 [1]2 years ago
4 0

Answer:the 2nd one

Explanation:

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The axis of the earth is<br> Tilted about 23.5 degrees<br> Vertical<br> Vertical
melisa1 [442]

Answer:

The axis of rotation of the Earth is tilted at an angle of 23.5 degrees away from vertical, perpendicular to the plane of our planet's orbit around the sun. The tilt of the Earth's axis is important, in that it governs the warming strength of the sun's energy.

Explanation:

can i get brainliest

5 0
3 years ago
A change in kinetic of an object is equal to the ___
podryga [215]

Answer:C..net work done on the object.

Explanation:

4 0
3 years ago
A charged particle enters a uniform magnetic field B with a velocity v at right angles to the field. It moves in a circle with p
alukav5142 [94]

A) d. 10T

When a charged particle moves at right angle to a uniform magnetic field, it experiences a force whose magnitude os given by

F=qvB

where q is the charge of the particle, v is the velocity, B is the strength of the magnetic field.

This force acts as a centripetal force, keeping the particle in a circular motion - so we can write

qvB = \frac{mv^2}{r}

which can be rewritten as

v=\frac{qB}{mr}

The velocity can be rewritten as the ratio between the lenght of the circumference and the period of revolution (T):

\frac{2\pi r}{T}=\frac{qB}{mr}

So, we get:

T=\frac{2\pi m r^2}{qB}

We see that this the period of revolution is directly proportional to the mass of the particle: therefore, if the second particle is 10 times as massive, then its period will be 10 times longer.

B) a. f/10

The frequency of revolution of a particle in uniform circular motion is

f=\frac{1}{T}

where

f is the frequency

T is the period

We see that the frequency is inversely proportional to the period. Therefore, if the period of the more massive particle is 10 times that of the smaller particle:

T' = 10 T

Then its frequency of revolution will be:

f'=\frac{1}{T'}=\frac{1}{(10T)}=\frac{f}{10}

6 0
3 years ago
A proton traveling due north enters a region that contains both a magnetic field and an electric field. The electric field lines
Bess [88]

Answer:

upward

Explanation:

In the electromagnetic system of force if the direction of motion of proton does not changes it means that the electric and magnetic forces are such a ways that they are cancelling each other's effect.

Since, electric field lines will exert a force on the proton to the west, hence, the magnetic force must force it to the east. It is well known that magnetic force acts perpendicular to the direction of magnetic field.  magnetic field should point upward direction.

3 0
2 years ago
How big is the universe?<br> sorry this is so random
prisoha [69]

Answer:

Explanation: 46 billion light years I think

Aww I wanted brainliest:( be doggo, doggo sad :(

6 0
2 years ago
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