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3 years ago

Match the term to its definition.

Physics

2 answers:

krek1111 [17]3 years ago

8 0

Equator -- an imaginary line drawn around Earth dividing it into northern and southern hemispheres (D)

Seasons -- the divisions of the year marked by specific weather patterns and daylight hours (A)

Tidal bulges -- two ocean bulges created on opposite sides of Earth due to the moon's gravitational pull and ocean's resistance to the pull (B)

Tides -- the rise and fall of sea levels due to gravitational forces (C)

max2010maxim [7]3 years ago

6 0

Equator: D)
Seasons: A)
Tidal bulges:B)
Tides:C)

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A particle of mass 10 g and charge 72 μC moves through a uniform magnetic field, in a region where the free-fall acceleration is

sineoko [7]

Answer:

$-0.07163\hat k\ T$ or 0.07163 T into the page

Explanation:

m = Mass of particle = 10 g

a = Acceleration due to gravity = -9.8j m/s²

v = Velocity of particle = 19i km/s

q = Charge of particle = 72 μC

B = Magnetic field

Here the magnetic and gravitational forces on the particle are applied in the opposite direction so,

$F_b=F_g$

$F_b=qvBsin\theta\\\Rightarrow F_b=qvBsin90\\\Rightarrow F_b=72\times 10^{-6}\times 19000B$

$F_g=ma\\\Rightarrow F_g=0.01\times -9.8$

$72\times 10^{-6}\times 19000B=0.01\times -9.8\\\Rightarrow B=\frac{0.01\times -9.8}{72\times 10^{-6}\times 19000}\\\Rightarrow B=-0.07163\hat k\ T$

The magnetic field is 0.07163 T into the page

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