Who was the first man on planet Jupiter

How does temperature influence a chemical change?

Serga [27]

Your weight #sorryfortheweight

8 0

2 years ago

On Earth, friction can be _____ but not removed.

Whitepunk [10]

Answer:

reduced

Explanation:

The use of bearing surfaces that are themselves sacrificial, such as low shear materials, of which lead/copper journal bearings are an example

4 0

2 years ago

Two sources emit beams of light of wavelength 550 nm. The light from source A has an intensity of 10 μW/m2, and the light from s

alexira [117]

Answer:

A) Beam B carries twice as many photons per second as beam A.

Explanation:

If we have two waves with the same wavelength, then their intensity is proportional to their power, or the energy per unit time.

We also know that the amount of photon present in an electromagnetic beam is proportional to the energy of the beam, hence the amount of beam per second is proportional to the power.

With these two facts, we can say that the intensity is a measure of the amount of photon per second in an electromagnetic beam. So we can say that beam B carries twice as more power than beam A, or Beam B carries twice as many photons per second as beam A.

3 0

3 years ago

Two circular coils are concentric and lie in the same plane. The inner coil contains 170 turns of wire, has a radius of 0.012 m,

GREYUIT [131]

Answer:

The current of the outer coil is $I_o = 3.99 \ A$

Explanation:

From the question we are told that

The number of turns of the inner coil is $N_i = 170 \ turn$

The radius of the inner coil is $R_i = 0.012 \ m$

The current of the inner coil is $I_i = 6.2 \ A$

The number of turns of the outer coil is $N_o = 220 \ turns$

The radius of the outer coil is $R_o = 0.02 0 \ m$

Generally the net magnetic field is mathematically represented as

$B = \frac{N \ mu I }{ 2 * R }$

Now from told that the net magnetic field is common

So

$\frac{N_i \mu I_i} {2 * R _i} = \frac{N_o \mu I_o} {2 * R _o}$

Here $\mu$ is the permeability of free space

making $I_o$ the subject

$I_o = \frac{ N_i I_i *2 * R _o}{N_o *2 * R _i}$

substituting values

$I_o = \frac{ 170 *6.2 *2 * 0.020}{220 *2 * 0.012}$

$I_o = 3.99 \ A$

5 0

3 years ago

which statement is true of a wave that's propagating along the pavement and girders of a suspension bridge?

Blizzard [7]

Question:

Which statement is true of a wave that’s propagating along the pavement and girders of a suspension bridge?

A. The wave is mechanical, with particles vibrating in a direction that is parallel to that of the wave, forming compressions and rarefactions.

B. The wave is electromagnetic, with particles vibrating in a direction that is parallel to that of the wave, forming compressions and rarefactions.

C. The wave is mechanical, with particles vibrating in a direction that is perpendicular to that of the wave, forming crests and troughs.

D. The wave is electromagnetic, with particles vibrating in a direction that is perpendicular to that of the wave, forming crests and troughs.

E. The wave is mechanical, with particles vibrating in a direction that is perpendicular to that of the wave, forming compressions and rarefactions.

Answer:

The statement “The wave is mechanical, with particles vibrating in a direction that is perpendicular to that of the wave forming compressions and rarefactions” is true of a wave that’s propagating along the pavement and girders of a suspension bridge.

Explanation:

As it is stated about the wave propagates in the given question, the first thing to confirm is the wave should be a mechanical wave as electromagnetic wave will not penetrate the suspension bridge.

Then as both the pavements and girders are rigid structures present in suspension bridge, the wave can propagate in them which are forming compressions and rarefactions.

The transverse waves cannot pass through them because of the polarization property of transverse waves. Also as they propagate in compression and rarefactions mode, the particles will tend to vibrate only in perpendicular direction to that of the wave propagation. So, the last statement is only true.

3 0

3 years ago

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Who was the first man on planet Jupiter​

Who was the first man on planet Jupiter