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allsm [11]
3 years ago
9

Electric current is.........

Physics
1 answer:
BigorU [14]3 years ago
4 0

An electric current is an orderly, directed movement of electrically charged particles

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What is the distance of earths surface from the surface of sun
storchak [24]
Max: 152 million km
min 146 million km
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3 years ago
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What will be the fundamental frequency and first three overtones for a 26cm long organ at 20°C if it is open ( at 20°C, the spee
kakasveta [241]

Explanation:

The frequency of an organ pipe if it is open is given by :

f=\dfrac{nv}{2l}

v is speed of sound in air is 343 m/s at 20°C

For fundamental frequency, n = 1

f=\dfrac{1\times 343}{2\times 0.26}\\\\f=659.61\ Hz

First overtone frequency,

f_1=2f\\\\f_1=2\times 659.61\\\\f_1=1319.22\ Hz

Second overtone frequency,

f_2=3f\\\\f_2=3\times 659.61\\\\f_2=1978.83\ Hz

Third overtone frequency

f_3=4f\\\\f_3=4\times 659.61\\\\f_3=2638.44\ Hz

Hence, this is the required solution.

3 0
3 years ago
What is the best example of potential energy?water flowing in a rivera puddle of water on the floora block of frozen ice on the
goldenfox [79]

Answer:

Water in an artificial lake held behind a dam

Explanation:

Potential energy is energy that can be converted to kinetic energy, for example, an object at a certain height has potential energy because we can drop the object to have kinetic energy.

Therefore, the best example of potential energy is water in an artificial lake held behind a dam because without the dam, the water will start to move and it becomes the energy into kinetic energy.

8 0
1 year ago
The Space Shuttle does not directly inject into its prescribed mission orbit. Rather, themain engine shutdown occurs at the apog
iris [78.8K]

Answer:

(a) burnout speed at apogee in the external tank disposal orbit=7.82 km/sec

(b) ΔV required for the OMS-1 =0.066 km/sec

(c) ΔV required for the OMS-2 =0.045 km/sec

(d) This part of the question is explained in detailed way in the attached file.

Explanation:

Detailed explanation of all the parts of the question are given in attached files.

8 0
3 years ago
1. Two magnets are placed on a table, and they immediately move to attach to each other. Which statement is correct about the en
erma4kov [3.2K]

Answer: 1: kinetic energy and velocity are at zero when the magnets are held apart, and both increases rapidly when they are released and move together. Energy stored in the magnetic field decreases.

2: The energy stored in the system is converted to kinetic, thermal, and sound energy.

3: The energy stored in the magnetic field does not change.

4: Some of the energy stored is converted into kinetic and thermal energy.

5: Two small repelling magnets hold each other in place.

Just took the quiz all are correct! I hope this helps you! :)

3 0
3 years ago
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