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3 years ago

14

There are several events listed below some of the events are related to tectonic plates activity mark each that is associated wi

th plate activity (4 points)
A. Earthquakes
B. Hurricane
C. Tsunamis
D. Mountain building/ formation

1 answer:

iVinArrow [24]3 years ago

5 0

A because an earthquake is shaking of tectonic plates

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Why do waves in a tank are 10 cm long if they pass a point at a rate of 3.75 waves per second what is the speed in m/s?

AURORKA [14]

Answer: 0.0267m/s

Explanation: Wave speed in m/s

Speed = Distance/Time

Substitute the given values into the formula

Speed = 0.1/3.75

Speed = 0.0267m/s

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2 years ago

At a certain location, Earth has a magnetic field of 0.60 ✕ 10−4 T, pointing 75° below the horizontal in a north-south plane. A

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Answer with Explanation:

We are given that

Magnetic field,B= $0.6\times 10^{-4} T$

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Current,I=19 A

a.We have to find the magnitude of magnetic force and direction of magnetic force.

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Using the formula

$F=0.6\times 10^{-4}\times 15\times 19sin75$

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Direction= $tan\theta=cot(90-75)=tan15^{\circ}$

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15 degree above the horizontal in the northward direction.

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3 years ago

The positron created in pair production travels a certain distance and loses all of its kinetic energy. It finally annihilates w

hichkok12 [17]

Answer:

In pair production, after the loss of Kinetic energy, the angular separation between the two photons is 180°.

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Pair production is the process of formation of two electrons, one negative and the other positive (positron), from a pulse of electromagnetic energy traveling through matter.

It is a process of direct conversion of radiant energy to matter.

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Therefore, the angle of separation between the two photons is 180°.

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1 year ago

A child has an ear canal that is 1.3 cm long. Assume the speed of sound is v = 344 m/s.

kap26 [50]

Answer:

The frequencies are $(f, f_1) = (6615.4 \ Hz , 19846.2\ Hz)$

Explanation:

From the question we are told that

The length of the ear canal is $l = 1.3 \ cm =\frac{1.3}{100} = 0.013 \ m$

The speed of sound is assumed to be $v_s = 344 \ m/s$

Now taking look at a typical ear canal we see that we assume it is a closed pipe

Now the fundamental harmonics for the pipe(ear canal) is mathematically represented as

$f = \frac{v_s}{4 * l }$

substituting values

$f = \frac{344}{4 * 0.013 }$

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Also the the second harmonic for the pipe (ear canal) is mathematically represented as

$f_1 = \frac{3v_s}{4 * l}$

substituting values

$f_1 = \frac{3 * 344}{4 * 0.013}$

$f_1 = 19846.2 \ Hz$

Given that sound would be loudest in the pipe at the frequency, it implies that the child will have an increased audible sensitivity at this frequencies

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2 years ago

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Adults. 18years olds and older were affected because back then only 21 years olds and older could vote but the 26th amendment changed that

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3 years ago

Read 2 more answers