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nikdorinn [45]
3 years ago
13

1

Physics
1 answer:
BartSMP [9]3 years ago
4 0

Answer:

where is the table?????????

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All atoms have moving electric charges. why then, aren't all materials magnetic?
Trava [24]
A charge will not experience a force in a magnetic field if it is not moving or if it is moving parallel to the magnetic field. <span>Why </span>aren't all materials magnetic<span>? Most </span>atoms have<span> electrons placed symmetrically so their </span>magnetic<span> fields cancel out.</span>
4 0
3 years ago
I hand you two spheres. They have the same mass, the same radius, and the same exterior surface. I claim one is a solid sphere a
castortr0y [4]

Answer:

Explanation:

Between two spheres of equal masses having equal radius , the one which is hollow will have less moment of inertia and therefore less  radius of gyration ( k )

When they are allowed to roll over an inclined plane , they will have acceleration as follows

a = gsinθ / ( 1 + k²/r²)

For hollow sphere , k is less . therefore denominator is less and acceleration is more.

in other words , hollow sphere will have greater acceleration . So it will reach the bottom of an inclined surface in lesser time if allowed to roll over it .  

This is how we can identify a hollow sphere without breaking it open .

5 0
3 years ago
A 7.5 nC point charge and a - 2.9 nC point charge are 3.2 cm apart. What is the electric field strength at the midpoint between
Oduvanchick [21]

Answer:

Net electric field, E_{net}=91406.24\ N/C

Explanation:

Given that,

Charge 1, q_1=7.5\ nC=7.5\times 10^{-9}\ C

Charge 2, q_2=-2.9\ nC=-2.9\times 10^{-9}\ C

distance, d = 3.2 cm = 0.032 m

Electric field due to charge 1 is given by :

E_1=\dfrac{kq_1}{r^2}

E_1=\dfrac{9\times 10^9\times 7.5\times 10^{-9}}{(0.032)^2}

E_1=65917.96\ N/C

Electric field due to charge 2 is given by :

E_2=\dfrac{kq_2}{r^2}

E_2=\dfrac{9\times 10^9\times 2.9\times 10^{-9}}{(0.032)^2}

E_2=25488.28\ N/C

The point charges have opposite charge. So, the net electric field is given by the sum of electric field due to both charges as :

E_{net}=E_1+E_2

E_{net}=65917.96+25488.28

E_{net}=91406.24\ N/C

So, the electric field strength at the midpoint between the two charges is 91406.24 N/C. Hence, this is the required solution.

3 0
4 years ago
What question could you ask about kinetic energy which will include the variables that affect it?
Juli2301 [7.4K]
KE= (1/2) mv²

So, the variables we need to include in our question would be a varable for a mass(m) of an object at some velocity(v).

My Answer:

(This is just an example question, yours can be different)
What is the Kinetic Energy experienced by an bouncy ball rolling at 7m/s (that's your velocity) across a frictionless surface that has a mass(m) of 10 grams? 


3 0
3 years ago
Read 2 more answers
Ranking Task: The Electromagnetic Spectrum
shutvik [7]

The increasing order of the wavelength from left to right are as follows Gamma Rays <  X-rays < UV rays < visible rays < infrared rays < microwaves < radio waves.

The electromagnetic spectrum consists of many waves which are made up of electric field and the magnetic field.

It is said that the electromagnetic wave behaves like particle as well as the wave.

The particle like pieces of the wave are called photons which contains the energy of the wave and the electromagnetic waves are primarily decided by the wavelength and the frequency of the wave.

The group of electromagnetic waves are known as electromagnetic spectrum.

The electromagnetic wave in the order of increasing wavelength are Gamma Rays <  X-rays < UV rays < visible rays < infrared rays < microwaves < radio waves.

To know more about electromagnetic spectrum, visit,

brainly.com/question/23423065

#SPJ4

8 0
1 year ago
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