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3 years ago

What does the abbreviation DC stand for in physics?

Physics

2 answers:

EastWind [94]3 years ago

6 0

dc = direct current
ac = alternate current

matrenka [14]3 years ago

6 0

Answer:

Option (C)

Explanation:

It stands for direct current.

There are two types of electric current.

1. Alternating current: it is current which changes its direction after a fixed interval if time. It varies sinosudially.

2. Direct current: it is the current which do not changes its direction. It is obtained by a battery.

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1 + 1 + 1 + 2 equals to what

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In a transverse wave, ____________________ is measured from crest to crest or from trough to trough.

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The blank is wavelength

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4 years ago

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A charged particle moves at 2.5 × 104 m/s at an angle of 25° to a magnetic field that has a field strength of 8.1 × 10–2 T. If t

nekit [7.7K]

the magnitude of charge=q=8.76 x 10⁻⁵C

Explanation:

the magnetic force Fm is given by

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3 years ago

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alexandr402 [8]

Answer:

Explanation:

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1/2 mv² = k q₁q₂/d , d is closest distance

d = 2kq₁q₂ / mv²

= 2 x 9 x 10⁹ x 79e x 2e / 4mv²

= 1422 x2x (1.6 x 10⁻¹⁹)² x 10⁹ /4x 1.67 x 10⁻²⁷ x (1.5 x 10⁷)²

= 3640.32 x 10⁻²⁹ /2x 3.7575 x 10⁻¹³

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4 years ago

Two +1 C charges are separated by 30000 m, what is the magnitude of the force?

Kipish [7]

Answer:

The magnitude of the force is 10 N

Explanation:

Coulomb's Law

The electrostatic force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between the two objects.

Written as a formula:

$\displaystyle F=k\frac{q_1q_2}{d^2}$

Where:

$k=9\cdot 10^9\ N.m^2/c^2$

q1, q2 = the objects' charge

d= The distance between the objects

We have two identical charges of q1=q2=1 c separated by d=30000 m, thus the magnitude of the force is:

$\displaystyle F=9\cdot 10^9\frac{1*1}{30000^2}$

F = 10 N

The magnitude of the force is 10 N

7 0

3 years ago