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Dmitriy789 [7]
4 years ago
7

a charged particle traveling follows a straight path through crossed electric and magnetic fields if the strength of the magneti

c field what is the strength of the magnetic field?
Physics
1 answer:
kaheart [24]4 years ago
8 0

Answer:

Explanation:

When a charged particle is moving in a straight line, means undeflected in a crossed magnetic and electric field, it means the net force on the charged particle is zero.

magnetic force is balanced by the electric force

q v B = q E

Where, q be the charge on the particle, v be the velocity, B be the strength of magnetic field, e be the strength of electric field.

So, B = E / v

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Sirius A has a luminosity of 26 LSun and a surface temperature of about 9400 K.What is its radius?
wlad13 [49]

Answer

Given,

Sirius A surface temperature,T = 9400 K

Sirius A luminosity,L = 26 L₀

L₀ is the luminosity of sun.

Radius of sun =  695700000 m

Temperature on sun surface = 5780 K

Luminous intensity is given by:-

L=4 \pi R^{2} \sigma T^{4}

Now

\frac{L}{L_{0}}=\frac{4 \pi R^{2} \sigma T^{4}}{4 \pi R_{0}^{2} \sigma T_{0}^{4}}=26

\Rightarrow \frac{R^{2} T^{4}}{R_{0}^{2} T_{0}^{4}}=26

\Rightarrow R^{2}=26 \times \frac{R^{2} T_{0}^{4}}{T^{4}}=26 \times \frac{695700000^{2} \times 5780^{4}}{9400^{4}}

R=1341246640\ m=1.34 \times 10^{9}

7 0
3 years ago
Change in velocity from 2 to -3
Alecsey [184]

Velocity units =m/s

Acceleration is the rate of change of velocity

a =timechange in velocity

Therefore SI units of acceleration is ms−1/s=s2m

5 0
3 years ago
Where is the Long Head located?<br> Outside of the Arm<br> Inside of the Arm<br> On the Shoulder
Basile [38]

Answer:

The biceps muscle is located at the front of your upper arm. The muscle has two tendons that attach it to the bones of the scapula bone of the shoulder and one tendon that attaches to the radius bone at the elbow. The tendons are tough strips of tissue that connect muscles to bones and allow us to move our limbs.

Explanation:

Glad i could help pls give brainliest and or thanks

3 0
3 years ago
Read 2 more answers
Please Someone Help me I Need Help ASAP PLEASE
dimaraw [331]
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4 0
4 years ago
Describe one practical use of a concave mirror.
Tatiana [17]

Answer:

Here are some uses...

Explanation:

Uses of convex mirror:

It is used in supermarkets and stores for surveillance.

It it is used as rear view mirror in automobiles.this is due to the reason that a convex mirror provides a wider field of view than a plane or concave mirror.

Uses of concave mirror:

It is used in torches.

They are used in headlights of vehicles to send parallel rays to infinity , in shaving mirror to get an enlarged image of the face and also by dentists to see a bigger image of the tooth / teeth .

Mark as brainliest if helped thanks!

7 0
3 years ago
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