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3 years ago

Which statement best describes light, whether polarized or unpolarized?

Physics

2 answers:

marshall27 [118]3 years ago

6 0

The best choice would be letter C hope this helps

alexira [117]3 years ago

6 0

Answer:

C. light in which the electric and magnetic vectors oscillate perpendicular to the direction of propagation of the wave

Explanation:

Light is an electromagnetic wave in which electric field vector and magnetic field vector both oscillates perpendicular to each other and also these two components are perpendicular to the propagation of wave.

As we know that the direction of velocity of wave is given by the formula

$\vec E \times \vec B = \vec v$

so here the velocity vector must be perpendicular to vector E and vector B

so here correct answer will be

C. light in which the electric and magnetic vectors oscillate perpendicular to the direction of propagation of the wave

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A transformer connected to a 110–(V) (rms) ac line is to supply 10.0 (V) (rms) to a portable electronic device. The load resista

spayn [35]

Answer:

Explanation:

a ) V( primary ) = 100 V

V( secondary ) = 10 V

No of turns ( secondary ) / No of turns ( primary ) = 10 / 100

= 1 / 10

b ) current in secondary

= volt ( secondary ) / resistance

= 10 /6 = 1.67 A

c )

Average power to secondary

= V ( secondary ) x current ( secondary )

= 10 x 10 / 6

= 16.67 W

d )

Power in primary = power in secondary = 16.67 W

e ) current drawn by ac line ( primary )

Volt ( primary ) x current ( primary ) = power in primary

= 16.67

current ( primary )

= 16.67 / 100

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3 years ago

What is the name of the process where rocks are being broken down into small grains of sediment or soil?

elena-s [515]

Answer:

a. weathering.

Explanation:

weathering is the process of breaking down rocks and minerals into smaller pieces by water, wind, and ice.

4 0

3 years ago

A 65.0-kg woman steps off a 10.0-m diving platform and drops straight down into the water. 1) If she reaches a depth of 3.20 m,

timurjin [86]

Answer:

F=2627.6N

Explanation:

The work done by this resistive force while traveling a distance d underwater would be:

$W=F.d=-Fd$

where the minus sign appears because the force is upwards and the displacement downwards.

This work is equal to the change of mechanical energy. At the diving plataform and underwater, when she stops moving, the woman has no kinetic energy, so all can be written in terms of her total change of gravitational potential energy:

$W=\Delta E=U_f-U_i=mgh_f-mgh_i=mg(h_f-h_i)$

Putting all together:

$F=-\frac{W}{d}=-\frac{mg(h_f-h_i)}{d}=-\frac{(65kg)(9.8m/s^2)(-3.2m-10m)}{3.2m}=2627.6N$

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3 years ago

What does the potential energy and kinetic energy of an object depend on ?

alexdok [17]

Answer:

Both, potential energy and kinetic energy depends on mass. The higher the mass, the higher the energy. However, the difference is that potential energy depends on vertical height whereas kinetic energy depends on the velocity.

Explanation:

From the formula we can see that;

Potential Energy = mass* gravitational acceleration *vertical height.

Kinetic Energy = 0.5 * mass * (velocity)^2

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3 years ago

What’s the formula for work

padilas [110]

Answer:

Explanation:

Work is force times distance. If you push on an object really hard but it does not budge, you have still performed no work on it, because anything times zero is still zero.

6 0

2 years ago

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