3 years ago

An infrared wave traveling through a vacuum has a frequency of 4.2

Physics

2 answers:

Ira Lisetskai [31]3 years ago

6 0

Answer:

B) $7.5$ × $10^{-7}$

Explanation:

got it right on edge

ololo11 [35]3 years ago

3 0

Answer:O 7.1x10^-7 m

Explanation:

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Elodia [21]

Answer:

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3 years ago

A charge q of 1.3 × 10-16 coulombs moves from point A to a lower potential at point B in an electric field of 3.2 × 102 newtons/

LUCKY_DIMON [66]

Explanation :

It is given that,

Charge, $q=1.3\times 10^{-16}\ C$

Electric field, $E=3.2\times 10^2\ N/C$

Distance, $d=1.1\times 10^{-2}\ m$

The work done is stored in the form of potential energy.

$W=F.d$

$\because F=qE$

So, $W=qE\ d$

$W=1.3\times 10^{-16}\ C\times 3.2\times 10^2\ N/C\times 1.1\times 10^{-2}\ m$

$W=4.576\times 10^{-16}\ J$

Hence, this is the required solution.

5 0

3 years ago

Read 2 more answers

The height of the upper falls at Yellowstone Falls is 33 m. When the water reaches the bottom of the falls, its speed is 26 m/s.

Klio2033 [76]

Answer:

Speed of water at the top of fall = 5.40 m/s

Explanation:

We have equation of motion

$v^2=u^2+2as$

Here final velocity, v = 26 m/s

a = acceleration due to gravity

$a=9.8m/s^2 \\$

displacement, s = 33 m

Substituting

$26^2=u^2+2\times 9.8 \times 33\\\\u^2=29.2\\\\u=5.40m/s \\$

Speed of water at the top of fall = 5.40 m/s

3 0

4 years ago

What's an example sentence using thermal energy

xeze [42]

Friction is an example of thermal energy. As the tiny heat particles move, more warmness is made from the friction.

6 0

4 years ago

How do contact forces such as friction differ from gravitational and magnetic forces?

Sloan [31]

"Contact" means "touching". A contact force can't act on an object unless
they're touching. Friction is a contact force.

Gravitational forces pull masses together even if they're not touching.
Magnetic forces pull a piece of iron toward a magnet even if they're not touching.

Gravitational and magnetic forces are "non-contact" forces.

7 0

3 years ago