3 years ago

EASY BUT PLEASE HELP Compare and contrast infrared waves, light waves, and ultraviolent waves

1 answer:

8 0

Answer:

Infrared waves have a wavelength 1,000x longer than ultraviolet waves (10^-16 vs 10^-13). ... The amplitude (or height) of an electromagnetic wave is proportional to its intensity

Explanation:

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A 1120 kg car traveling initially with a speed of 27.40 m/s in an easterly direction crashes into the back of a 9 490 kg truck m

asambeis [7]

Answer:

41.5 m/s

Explanation:

Since there are no external forces, momentum must be conserved.

Momentum P = mv.

Total momentum before the collision:

$P = m_{car}v_{car} + m_{tru}_{ck}v_{tru}_{ck} = 1120 * 27.4 + 490 * 20 = 40.488$

Total momentum after the collision:

$P = 1120 * 18 + 490 * v_{tru}_{ck} = 40.488$

solving for v:

$v_{truck} = 41.5$

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3 years ago

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kiruha [24]

Answer:

Explanation:

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3 years ago

Which part, A or B, captures, amplifies, and demodulates radio waves? _____

olga_2 [115]

Answer:

1. B

2. A

Explanation:

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3 years ago

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A reaction occurs in which a neutron strikes the nucleus of a uranium-235 atom, forming a krypton-92 atom, a barium-141 atom, an

Reil [10]

Answer:

A This is a nuclear reaction, because the atoms nucleus changed.

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3 years ago

While a block slides forward 1.35 m, a force pulls back at a 135 direction, doing -17.8 J of work. what is the magnitude of the

Verdich [7]

The magnitude of the force is 18.6 N

Explanation:

The work done by a force on an object is given by

$W=Fd cos \theta$

where

F is the magnitude of the force

d is the displacement of the object

$\theta$ is the angle between the direction of the force and of the displacement

For the block in this problem, we have

$W=-17.8 J$ is the work done

d = 1.35 m is the displacement of the block

$\theta=135^{\circ}$ is the angle between the force and the displacement

Solving for F, we find the magnitude of the force:

$F=\frac{W}{d cos \theta}=\frac{-17.8}{(1.35)(cos 135)}=18.6 N$

Learn more about work here:

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4 years ago