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mr Goodwill [35]
3 years ago
6

How can plates move? O A, apart OB) together OC) sideways OD) in all these ways

Physics
2 answers:
noname [10]3 years ago
6 0

Answer:

The answer is D.

If I am right could you mark me as Brainliest.

nordsb [41]3 years ago
4 0
D is the correct answer
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A force acts on an object. Which option describes an action that could prevent the object from moving
Naya [18.7K]

Answer:

Friction or tension

Explanation:

Friction stops an object from moving in the presence of force

7 0
3 years ago
A velocity selector has a magnetic field of magnitude 0.22 T perpendicular to an electric field of magnitude 0.51 MV/m.
ohaa [14]

Answer:

speed of a particle  = 2.31 × 10^{6} m/s

energy of proton required = 27.77 KeV

energy of electron required =  15.171 eV

Explanation:

given data

magnetic field of magnitude = 0.22 T

electric field of magnitude = 0.51 MV/m

to find out

speed of a particle and energy must protons have to pass through undeflected and  energy must electrons have to pass through undeflected

solution

we know that force due to magnetic and electric field is express as

force due to magnetic field B = qvB    ..............1

and force due to electric field E = qE   .....................2

so without deflection force due to magnetic field  = force due to electric field  

so here qvB = qE

and V = \frac{E}{B}    ...................3

put here value

V =  \frac{0.51*10^6}{0.22}

speed of a particle  = 2.31 × 10^{6} m/s

and

now energy of proton required will be here as

energy of proton required = mass of proton × \frac{V^2}{2}

put here value

energy of proton required = 1.67 × 10^{-27} × \frac{(2.31*10^6)^2}{2}

energy of proton required = 4.45 × 10^{-15} J

energy of proton required = 4.45 × 10^{-15} J ÷ (1.602 × 10^{-19}

energy of proton required = 27777.777 eV

energy of proton required = 27.77 KeV

and

now we get here energy of electron required that is

energy of electron required = mass of electron × \frac{V^2}{2}

put here value

energy of electron required = 9.11 × 10^{-31} × \frac{(2.31*10^6)^2}{2}

energy of electron required =  24.305× 10^{-19} J

energy of electron required =  24.305 × 10^{-19} J ÷ (1.602 × 10^{-19}  

energy of electron required =  15.171 eV

5 0
4 years ago
Read 2 more answers
Someone help meeeee! please
Ratling [72]

Answer:

This looks like an example of combustion

Explanation:

5 0
3 years ago
Increasing the mass attached to a spring will decrease the angular frequency of its vibrations. True or False
Scrat [10]

Answer:

decreases

Explanation:

The angular frequency of the mass is given by

\omega =\sqrt{\frac{k}{m}}

where, k is the spring constant and m be the mass of the body which is doing oscillations.

if the mass of the body increases, so the value of angular frequency decreases, as the angular frequency is inversely proportional to the square root of the mass of the body.

4 0
3 years ago
Which term refers to the rate at which the velocity of a moving object changes? A.acceleration B.displacement C.resonance D.turb
Inessa [10]
A. Acceleration is the answer to you question. When an object changes velocity it can accelerate.<span />
4 0
4 years ago
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