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3 years ago

9. Liquid A has greater density than Liquid B. Which liquid will be exerting more pressure on the sides of the container?

Physics

1 answer:

riadik2000 [5.3K]3 years ago

8 0

Answer:

The depth of water near middle tube is greater so the water comes out with greater pressure from middle tube and falls farther away from the base of vessel. The depth of water near lowermost tube is the greatest so the water comes out of lowermost tube with the greatest pressure and goes farthest from the vessel.

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Which of the following statements about electromagnetic waves in free space are true? (There could be more than one correct choi

Vanyuwa [196]

Answer:

The electric field carries the same mount of energy as the magnetic field

The frequency of the magnetic field is the same as the frequency of the electric field.

Explanation:

Let's analyze each option in detail:

The electric and magnetic fields have equal amplitudes. --> FALSE. In fact, the amplitudes of the electric and magnetic field are related by the equation:

$E=cB$

where

E is the amplitude of the electric field

B is the amplitude of the magnetic field

c is the speed of light

Therefore, from the equation we see that the amplitude of the electric field is much larger than that of the magnetic field.

The electric field carries the same mount of energy as the magnetic field. --> TRUE.

The energy carried by the electric field is:

$u_E = \frac{1}{2}\epsilon_0 E^2$

where $\epsilon_0$ is the vacuum permittivity.

The energy carried by the magnetic field is:

$u_B = \frac{1}{2\mu_0}B^2$

where $\mu_0$ is the vacuum permeability.

Given the following relationship:

$c=\frac{1}{\sqrt{\epsilon_0 \mu_0}}$

We can write

$E=cB=\frac{1}{\sqrt{\epsilon_0 \mu_0}}B$

$u_E = \frac{1}{2}\epsilon_0 (\frac{1}{\sqrt{\epsilon_0 \mu_0}}B)^2=\frac{1}{2\mu_0}B^2$

which means $u_E=u_B$ .

The electric field carries more energy than the magnetic field. --> FALSE, because in disagreement with the calculations above.

The frequency of the magnetic field is the same as the frequency of the electric field. --> TRUE. In an electromagnetic waves, electric field and magnetic field oscillate at the same frequency.

The frequency of the electric field is higher than the frequency of the magnetic field. --> FALSE, because in disagreement with the previous statement.

8 0

3 years ago

The picture shows two different species of mammals that use wings to glide among tree tops. However, scientists theorize that th

AlekseyPX

Answer:

Explanation:

6 0

3 years ago

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Please Help! When does the double-slit interference have its first dark spot on either side of the central peak intensity?

Anvisha [2.4K]

A, C, and D are true when a light spot appears, so those are false.

The answer is therefore B.

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3 years ago

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Bats rely on sound localization to be able to fly during the night. on a cool 20 °c summer night, a bat produces an ultrasonic s

rjkz [21]

The unit of frequency, kHz, is also equivalent to 1/kilosecond or 1/1000 seconds. The equation relating wavelength and frequency is:

c = wavelength*frequency, where c is known as the speed of light. But since we are dealing with ultrasound, we use the speed of sound. The speed of sound is dependent on the temperature. The correlation would be:

c = 331 + 0.6T = 331 + 0.6(20°C) = 343 m/s

Therefore,

343 = wavelength * 1/1000
wavelength = 343,000 meters

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4 years ago

If it is spring in the north.Hemisphere,it is blank in the south.Hemisphere

stira [4]

Spring begins on September 1 and ends on November 30 in the Southern Hemisphere; summer begins on December 1 and ends on February 28 (February 29 in a Leap Year); fall (autumn) begins on March 1 and ends on May 31 in the Northern Hemisphere; and.

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