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Lyrx [107]
3 years ago
9

The unit light-year is a measure of

Physics
2 answers:
chubhunter [2.5K]3 years ago
8 0
I believe the answer is C. People use light years to figure out how far a planet is from either us, the sun, or other planets.
stiv31 [10]3 years ago
5 0
A light-year is a unit of distance.

The definition of a light-year is the distance light travels in one year.
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I need help with question two
zaharov [31]
I can't see numbers here, so here are all the answers:
1) the frequency is c/λ = 3e8/556e-9 = 5.39e14Hz
2) light travels at <span>299,792,458 m/s.  So in nanoseconds it's 0.299792458m.  This is about 1/3 of a meter which is about one foot.
3) length is L = ct = (</span>299,792,458 m/s)(6e-15) = 1.799e-6m or 1.799μm

6 0
3 years ago
When a circuit is arranged in parallel:________
vodomira [7]

Answer:

Answer:

B .There are multiple paths the electrons can take through the circuit, and it is possible for the electron to pass through one circuit component but not another.

Explanation:

Because in a parallel circuit, all components are connected across each other, forming exactly two sets of electrically common points.

8 0
3 years ago
If the wavelength of an electromagnetic wave is too long or too short,
Evgesh-ka [11]
it is no longer and electromagnetic wave.
3 0
3 years ago
Read 2 more answers
A particle that has a charge of 7.4 μC moves with a velocity of magnitude 3 × 105 m/s along the +x axis. It experiences no magne
sweet [91]

Answer:

Explanation:

F = qvB

Where F equal to the magnetic force on the particle.

q = charge on the particle

v = velocity of the particle

B =Magnetic field

F = 0.520N

q = 7.4 μC = 7.4×10-⁶C

v = 3×10⁵m/s

B= ?

B = F/qv

B = 0.520/(7.4×10-⁶ ×3×10⁵)

B = 0.234T.

6 0
3 years ago
List 3 machines you can make to reduce the amount of energy you use in your activities (or work)
suter [353]

Answer:

wheel or axle

lever

pulley

3 0
3 years ago
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