Why do astronauts keep to altitudes beneath the Van Allen radiation belts when doing space walks?

Q: A surface at 27° C emits radiation at a rate of 100 W. At what rate does an identical surface at 49…

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Q: Ans):-> The space environment has a eamplex ynamila smuetie. It ndudes neuhal species pasheles ,…

A: The space environment has a complex dynamic structure. It includes neutral species charged…

Q: What changes in cosmic-ray intensity at Earth’s surface would you expect during periods in which…

A: The Earth's magnetic field works as a shield to the Earth from harmful rays. This magnetic field is…

Q: An MRI is essentially a giant solenoid. If it draws 50 amps of current and creates a magnetic field…

A: The given data are: I=50 AB=5 T Here, I denotes the current and B denotes the magnetic field.

Q: Determine the wavelength of the maximum amount of radiation emitted by surface at 49 °C. Express…

A: Power = 100 W surface temperature (T) = 49o C = 322 K

Q: Name the electromagnetic waves which (i) maintain the earth’s warmth and (ii) are used in aircraft…

A: (i) Infrared rays maintain the earth’s warmth and it is also used for heating purpose.

Q: What is a magnetic field? What is its source?

A: Introduction :- Here we need to define the magnetic field and the source of it.

Q: Why are lightening rods normally at higher elevation than the buildings they protect?

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Q: Why is the direction of lightning from cloud to cloud and cloud to ground? What do you think is the…

A: Lighting is the cause because of electrostatic potential difference between two clouds where one has…

Q: Why are the convection and the radiation resistances at a surface in parallel instead of being in…

A: As the heat transfer occurs simultaneously for convection and radiation process, the convection and…

Q: How is a radio wave transmitted?

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Q: What do electric and magnetic fields contain and transport?

A: A changing electric field generates a changing magnetic field. A changing magnetic field produces a…

Q: Why do we have “right-hand” rules in electricity and magnetism but not left-hand rules?

A: Right Hand Rule states that if we arrange our thumb, forefinger and middle finger of the right-hand…

Q: What does changing magnetic field induce?

A: A change in magnetic field induces a current in a conductor.

Q: Which  is the fastest communication channel?

A: A microwave is the fastest communication channel

Q: Why do you think that ultraviolet radiation causes a suntan whereas infrared radiation dies not?

A: The ultraviolet rays are damaging because they can cause damage to skin cells. It can cause…

Q: Who discovered the radio waves?

A: Introduction: In the electromagnetic spectrum, several wavelengths of light are present.…

Q: nich a current aintained. Wh a maanotio fi

A: The solution can be given as follows :-

Q: Compute in ionosphere Debye length for n=106 m- 3 and T=100K

A: Given: The density of the electron is 106 m-3. The temperature of the ionosphere is 100 K.

Q: What are magnetic pole reversals?

A: Every magnet has two poles North pole(N) and South pole(S), Which is the imaginary magnetic lines of…

Q: Explain the term diamagnetism.

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Q: proton number density to be 50 cm¬3. Determine the velocity of the magnetopause at a distance of 5…

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Q: How does electricity work through magnetism?

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Q: What are magnetic monopoles? Do they exist?

A: Magnetic Monopoles:                           It is a hypothetical one, with a magnetic charge,…

Q: In which layer of the earth is the source of Earth's magnetic field? Explain the importance of the…

A: The Earth rotates on its axis. This rotation causes electric currents to form magnetic field around…

Q: What is the relantionship between the electric currents, magnetic fields and the compass? Thanks

A: The relationship between electric current and magnetic field are closely related.  A current…

Q: Why do astronauts keep altitude beneath Van Allen radiation belts when doing space walks?

A: The Van Allen radiation belts are the reasons of harmful radiations or the charged particles. The…

Q: Compare between Magnetic method and Gravity method?

A: There are two different methods  magnetic method and gravity method

Q: What effect does Earth's magnetic field have one the intensity of cosmic rays striking Earth's…

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Q: What is a radial magnetic field?

A: A radial magnetic field is a magnetic field wherein the coil’s plane stays parallel to the magnetic…

Q: What else gives off radio waves naturally?

A: Radio waves naturally emits energy across the electromagnetic spectrum having a function of…

Q: This picture shows a radiometer. It is designed to be placed in a sunny window. One side of each…

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Q: encompass

A: The electromagnetic spectrum shows the arrangement of all waves according to the wavelength and…

Q: Why Electricity and Magnetism are useful in our daily lives? Explain briefly.

A: Electricity and Magnetism are very useful in our daily lives. Electricity and Magnetism are the base…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.