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A rocket speeding by the Earth at 0.917c is roughly cylindrical in shape and oriented such that its ...

A rocket speeding by the Earth at 0.917c is roughly cylindrical in shape and oriented such that its ...

[html]A rocket speeding by the Earth at 0.917c is roughly cylindrical in shape and oriented such that its axis is parallel to its velocity. At rest, it is measured to have a radius of 15 m and a length of 150 m. When speeding by, what is its volume as measured by observers on Earth?

▸ 6.78 × 103 m3

▸ 1.70 × 104 m3

▸

Physics   Jchanis15   38   dioxy186   2 months ago

A pion has a mean lifetime of 25 ns in its own rest frame. A beam of pions traveling through the ...

A pion has a mean lifetime of 25 ns in its own rest frame. A beam of pions traveling through the ...

A pion has a mean lifetime of 25 ns in its own rest frame. A beam of pions traveling through the laboratory at a speed of 0.60 c is measured to have a mean lifetime of

▸ 21 µs.

▸ 20 ns.

▸ 31 ns.

▸ 31 µs.

Physics   trixr4kids   26   Chintan13   2 months ago

A passenger is on a spaceship traveling at 0.8 c. The passenger observes that her watch

A passenger is on a spaceship traveling at 0.8 c. The passenger observes that her watch

A passenger is on a spaceship traveling at 0.8 c. The passenger observes that her watch

▸ is running slow.

▸ is running fast.

▸ is keeping time as usual.

▸ is running slow if the ship is traveling in the positive direction.

▸ is running slow if the ship is traveling in the negative direction.

Physics   npdtan92   24   letssdoothiss   2 months ago

A pair of observers moving relative to one another will always agree upon all but which of the following?

A pair of observers moving relative to one another will always agree upon all but which of the following?

A pair of observers moving relative to one another will always agree upon all but which of the following?

▸ the speed of light

▸ their respective masses

▸ whether two events are simultaneous

▸ their relative velocity

▸ the relativistic factor gamma that links their reference frames

Physics   ahyukj   64   nancy123   2 months ago

A pair of observers moving relative to each other will

A pair of observers moving relative to each other will

A pair of observers moving relative to each other will

▸ always agree on the ordering in time of two events

▸ sometimes disagree about whether two events are simultaneous

▸ always disagree about the ordering in time of two events

▸ always agree about whether two events are simultaneous

Physics   neezy   22   channy40   2 months ago

A megaton explosion releases 4.2 1015 J of energy. Approximately how much mass is converted into ...

A megaton explosion releases 4.2 1015 J of energy. Approximately how much mass is converted into ...

A megaton explosion releases 4.2 × 1015 J of energy. Approximately how much mass is converted into energy in this process?

▸ None, if it is the result of a chemical reaction.

▸ None, since mass is conserved.

▸ 50 kg

▸ 50 g

▸ 109 kg

Physics   mhbtelc   28   Nfernandez1991   2 months ago

A conclusion from special relativity is that events that are simultaneous in one inertial frame

A conclusion from special relativity is that events that are simultaneous in one inertial frame

[html]A conclusion from special relativity is that events that are simultaneous in one inertial frame

▸ are simultaneous in all inertial reference frames.

▸ are simultaneous in all inertial frames moving at the same speed.

▸ may not be simultaneous in another inertial reference frame.

▸ are simultaneous in inertial reference frames moving in the sa

Physics   32264   32   twnklstr   2 months ago

X-rays of wavelength 0.080 nm are used in a Bragg scattering experiment with a crystal. If the ...

X-rays of wavelength 0.080 nm are used in a Bragg scattering experiment with a crystal. If the ...

X-rays of wavelength 0.080 nm are used in a Bragg scattering experiment with a crystal. If the first-order maximum is found at an incident angle of 6.0° relative to the crystal surface, what is the plane spacing in the crystal?

▸ 0.31 nm

▸ 0.71 nm

▸ 1.4 nm

▸ 0.38 nm

▸ 0.77 nm

Physics   becky28   30   Loveameriah   2 months ago

White light is shone on a very thin layer of mica (n = 1.57), suspended in air, at normal incidence. ...

White light is shone on a very thin layer of mica (n = 1.57), suspended in air, at normal incidence. ...

[html]White light is shone on a very thin layer of mica (n = 1.57), suspended in air, at normal incidence. When the mica layer is observed from the illuminated side, constructive interference is observed for wavelengths of violet (400 nm) and yellow (560 nm) light. What is the thickness of the mica layer?

▸ 382 nm

▸ 446 nm

▸ 600 nm

▸ 700 nm

▸

Physics   smithc52   46   kinnigit   2 months ago

When the slit width is doubled, what happens to the width of the central maximum in a single-slit ...

When the slit width is doubled, what happens to the width of the central maximum in a single-slit ...

When the slit width is doubled, what happens to the width of the central maximum in a single-slit diffraction pattern? Assume small angles.

▸ nothing

▸ it doubles

▸ it halves

▸ it quadruples

▸ it quarters

Physics   thunter609   34   sz   2 months ago

When scattering x-rays with a wavelength of 3.28 10-10 m from a crystal, the first interference ...

When scattering x-rays with a wavelength of 3.28 10-10 m from a crystal, the first interference ...

When scattering x-rays with a wavelength of 3.28 × 10-10 m from a crystal, the first interference maximum occurs at an angle of 23.0 degrees relative to the crystal surface. What is the crystal spacing?

▸ 4.2 × 10-10 m

▸ 16.8 × 10-10 m

▸ 6.3 × 10-10 m

▸ 8.4 × 10-10 m

Physics   capella234   27   fs125   2 months ago

When scattering 0.328 nm x-rays off a crystal, the first interference maximum occurs at an angle of ...

When scattering 0.328 nm x-rays off a crystal, the first interference maximum occurs at an angle of ...

When scattering 0.328 nm x-rays off a crystal, the first interference maximum occurs at an angle of 23.0 degrees relative to the crystal surface. At what angle does the second maximum occur?

▸ 51.4o

▸ 46.0o

▸ 34.5o

▸ There is no second maximum.

Physics   lovepink1122   31   herroo   2 months ago

When light of wavelength 700 nm is used in a single-slit diffraction pattern, the central maximum ...

When light of wavelength 700 nm is used in a single-slit diffraction pattern, the central maximum ...

When light of wavelength 700 nm is used in a single-slit diffraction pattern, the central maximum has a width of 3.5 cm. When the light source is replaced by one of wavelength 500 nm, what central width will result? Assume small angles.

▸ 3.5 cm

▸ 3.0 cm

▸ 2.5 cm

▸ 4.9 cm

▸ 4.0 cm

Physics   briemert2013   28   Loveameriah   2 months ago

What slit separation is required for a grating to produce a first-order maximum at an angle of 40.0 ...

What slit separation is required for a grating to produce a first-order maximum at an angle of 40.0 ...

What slit separation is required for a grating to produce a first-order maximum at an angle of 40.0° for a wavelength of 589 nm?

▸ 109 nm

▸ 690 nm

▸ 378 nm

▸ 458 nm

▸ 916 nm

Physics   anthonyaooo   36   john august t   2 months ago

What minimum thickness of oil (n = 1.50) on the surface of water (n = 1.33) would give constructive ...

What minimum thickness of oil (n = 1.50) on the surface of water (n = 1.33) would give constructive ...

What minimum thickness of oil (n = 1.50) on the surface of water (n = 1.33) would give constructive interference for 550 nm light at normal incidence?

▸ 78.0 nm

▸ 80.0 nm

▸ 92.0 nm

▸ 183 nm

▸ 275 nm

Physics   jack bopp   41   dreamnluv   2 months ago

What minimum thickness of oil (n = 1.50) on the surface of water (n = 1.33) would give destructive ...

What minimum thickness of oil (n = 1.50) on the surface of water (n = 1.33) would give destructive ...

What minimum thickness of oil (n = 1.50) on the surface of water (n = 1.33) would give destructive interference for 550 nm light at normal incidence?

▸ 275 nm

▸ 183 nm

▸ 92.0 nm

▸ 80.0 nm

▸ 78.0 nm

Physics   ahyukj   29   angelofavarice   2 months ago

What kind of image does a holographic plate produce for the viewer?

What kind of image does a holographic plate produce for the viewer?

What kind of image does a holographic plate produce for the viewer?

▸ real

▸ virtual

▸ may be either virtual or real

Physics   onetouch   26   ecunis1   2 months ago

What is the smallest thickness of a coating of magnesium fluoride (n = 1.38) applied to glass (n = ...

What is the smallest thickness of a coating of magnesium fluoride (n = 1.38) applied to glass (n = ...

What is the smallest thickness of a coating of magnesium fluoride (n = 1.38) applied to glass (n = 1.50) that gives minimum reflection for 600 nm light?

▸ 600 nm

▸ 300 nm

▸ 435 nm

▸ 109 nm

▸ 100 nm

Physics   cjr4808   29   Hope89   2 months ago

What is the minimum thickness of the air layer between two flat glass surfaces if the glass is to ...

What is the minimum thickness of the air layer between two flat glass surfaces if the glass is to ...

What is the minimum thickness of the air layer between two flat glass surfaces if the glass is to appear bright when 450 nm light is incident normally?

▸ 57.0 nm

▸ 113 nm

▸ 170 nm

▸ 226 nm

Physics   rado202   31   lnvolley24   2 months ago

What is the limiting angle of resolution, in degrees, for a microscope with an objective 0.50 cm in ...

What is the limiting angle of resolution, in degrees, for a microscope with an objective 0.50 cm in ...

What is the limiting angle of resolution, in degrees, for a microscope with an objective 0.50 cm in diameter when viewing with light of wavelength 590 nm?

▸ 2.1 × 10-3

▸ 4.1 × 10-3

▸ 7.2 × 10-5

▸ 8.2 × 10-3

▸ 1.4 × 10-4

Physics   nitanikollaj   26   fass   2 months ago

What is the highest order maximum possible using a grating with 600 slits per mm for a wavelength of ...

What is the highest order maximum possible using a grating with 600 slits per mm for a wavelength of ...

What is the highest order maximum possible using a grating with 600 slits per mm for a wavelength of 700 nm?

▸ 1

▸ 2

▸ 3

▸ 4

▸ 5

Physics   MrBio23   27   rbacon2   2 months ago

What is the angular resolution of the eye at a wavelength of 500 nm for a pupil diameter of 2.8 mm?

What is the angular resolution of the eye at a wavelength of 500 nm for a pupil diameter of 2.8 mm?

What is the angular resolution of the eye at a wavelength of 500 nm for a pupil diameter of 2.8 mm?

▸ 1.8 × 10-4 rad

▸ 2.2 × 10-4 rad

▸ 8.9 × 10-5 rad

▸ 4.5 × 10-5 rad

▸ 3.3 × 10-5 rad

Physics   whitywhite11   24   josham   2 months ago

Wave 1 has intensity 9.0 I0 while wave 2 has intensity 4.0 I0. What is their ratio of amplitudes, A1/A2?

Wave 1 has intensity 9.0 I0 while wave 2 has intensity 4.0 I0. What is their ratio of amplitudes, A1/A2?

Wave 1 has intensity 9.0 I0 while wave 2 has intensity 4.0 I0. What is their ratio of amplitudes, A1/A2?

▸ 20

▸ 5.1

▸ 2.3

▸ 1.5

▸ 1.3

Physics   triciababy1   40   rangelife   2 months ago

Wave 1 has amplitude of 9.0 A0 and wave 2 has amplitude 4.0 A0. What is the ratio of their ...

Wave 1 has amplitude of 9.0 A0 and wave 2 has amplitude 4.0 A0. What is the ratio of their ...

Wave 1 has amplitude of 9.0 A0 and wave 2 has amplitude 4.0 A0. What is the ratio of their intensities, I1/I2?

▸ 20

▸ 5.1

▸ 2.3

▸ 1.5

▸ 1.3

Physics   pgakui   30   ydnam23   2 months ago

Using a Michelson interferometer and a light source of 400 nm, a change from bright to dark ...

Using a Michelson interferometer and a light source of 400 nm, a change from bright to dark ...

Using a Michelson interferometer and a light source of 400 nm, a change from bright to dark indicates a change in the difference of arm lengths of

▸ 2.0 × 10-4 mm.

▸ 4.0 × 10-4 mm.

▸ 3.0 × 10-4 mm.

▸ 1.0 × 10-4 mm.

Physics   jack103106   27   elisebarnett   2 months ago

Using a double slit with d = 300 nm and light of wavelength 400 nm, what would you see on a distant ...

Using a double slit with d = 300 nm and light of wavelength 400 nm, what would you see on a distant ...

[html]Using a double slit with d = 300 nm and light of wavelength 400 nm, what would you see on a distant screen?

▸ The intensity is maximum at the center and gradually decreases to either side.

▸ The intensity is minimal at the center and gradually increases to either side.

▸ The intensity is maximum in a single narrow line at the center.

▸ The in

Physics   Earthgirl225   28   sherbiejr16   2 months ago

Two point sources of light of wavelength 600 nm are being viewed by a telescope with aperture width ...

Two point sources of light of wavelength 600 nm are being viewed by a telescope with aperture width ...

[html]Two point sources of light of wavelength 600 nm are being viewed by a telescope with aperture width 2.0 cm. What is the smallest angular separation at which the two sources can be resolved?

▸ 7.3 × 10-5 rad

▸ 3.7 × 10-5 rad

▸ 7.3 × 10-5 deg

▸ 3.7 × 10-5 deg

▸ 4.2 × 10-3 deg[/h

Physics   FallenOne   28   durandal   2 months ago

Two planes of atoms in a crystal are separated by 3.25 10-10 m. Light of what wavelength would show ...

Two planes of atoms in a crystal are separated by 3.25 10-10 m. Light of what wavelength would show ...

[html]Two planes of atoms in a crystal are separated by 3.25 × 10-10 m. Light of what wavelength would show constructive interference at an angle of 17.5 degrees relative to the crystal surface?

▸ 3.9 × 10-10 m

▸ 4.9 × 10-9 m

▸ 9.75 × 10-10 m

▸ 1.46 × 10-10 m

▸ 1.95 × 10-10 m

Physics   Rosa   28   vlad8919   2 months ago

Two planes of atoms in a crystal are separated by 3.25 10-10 m. How many maxima will there be in ...

Two planes of atoms in a crystal are separated by 3.25 10-10 m. How many maxima will there be in ...

Two planes of atoms in a crystal are separated by 3.25 × 10-10 m. How many maxima will there be in the diffraction pattern for x-rays of wavelength 2.0 × 10-10 m scattered from this crystal?

▸ 4

▸ 2

▸ 3

▸ an infinite number

▸ 1

Physics   sam3359   22   brassgod   2 months ago

Two coherent waves, each with intensity I0, are in phase as they overlap in a region of space. The ...

Two coherent waves, each with intensity I0, are in phase as they overlap in a region of space. The ...

Two coherent waves, each with intensity I0, are in phase as they overlap in a region of space. The intensity of the superposed wave is

▸ 0.

▸ I0.

▸ 2I0.

▸ 3I0.

▸ 4I0.

Physics   capriciossa   21   penmc   2 months ago

Two coherent waves, each with amplitude A, are in phase as they overlap in a region of space. The ...

Two coherent waves, each with amplitude A, are in phase as they overlap in a region of space. The ...

Two coherent waves, each with amplitude A, are in phase as they overlap in a region of space. The amplitude of the superposed wave is

▸ 0.

▸ A.

▸ 2A.

▸ 3A.

▸ 4A.

Physics   bmh12e   25   richardbugg   2 months ago

Two coherent waves interfere constructively. One wave has an intensity of 8.00 I0 and the other has ...

Two coherent waves interfere constructively. One wave has an intensity of 8.00 I0 and the other has ...

[html]Two coherent waves interfere constructively. One wave has an intensity of 8.00 I0 and the other has an intensity of 4.00 I0. What is the intensity of the superposed wave?

▸ 4.00 I0

▸ 8.00 I0

▸ 12.0 I0

▸ 23.3 I0

▸ 24.0 I

Physics   pinkkurage   43   jarste123   2 months ago

Two coherent waves interfere constructively. One wave has amplitude 8A0 and the other has amplitude ...

Two coherent waves interfere constructively. One wave has amplitude 8A0 and the other has amplitude ...

Two coherent waves interfere constructively. One wave has amplitude 8A0 and the other has amplitude 6A0. The amplitude of the superposed wave is

▸ 6A0.

▸ 8A0.

▸ 10A0.

▸ 14A0.

▸ 2A0.

Physics   bluerose501   32   knh1473   2 months ago

Two coherent sources emit waves of wavelength 2.0 m in phase. If the difference in path lengths to ...

Two coherent sources emit waves of wavelength 2.0 m in phase. If the difference in path lengths to ...

Two coherent sources emit waves of wavelength 2.0 m in phase. If the difference in path lengths to an observer is 7.0 m, what kind of interference occurs?

▸ no interference occurs

▸ neither constructive nor destructive, but something in between

▸ constructive

▸ destructive

Physics   kady   24   bigmatic94   2 months ago

The resolution of a microscope can be most improved by

The resolution of a microscope can be most improved by

The resolution of a microscope can be most improved by

▸ increasing the wavelength and the diameter of the lens.

▸ decreasing the wavelength and the diameter of the lens.

▸ decreasing the wavelength and increasing the diameter of the lens.

▸ increasing the wavelength and decreasing the diameter of the lens.

Physics   jack bopp   20   TAE29   2 months ago

Substituting tan for sin results in what percent error for an angle of 5.00?

Substituting tan for sin results in what percent error for an angle of 5.00?

Substituting tan θ for sin θ results in what percent error for an angle of 5.00°?

▸ 5.00

▸ 0.0166

▸ 0.0333

▸ 0.191

▸ 0.382

Physics   bioFREAK11   24   carducb   2 months ago

Max von Laue is known for his work with

Max von Laue is known for his work with

Max von Laue is known for his work with

▸ double-slit interference.

▸ single-slit diffraction.

▸ x-ray crystallography.

▸ holography.

▸ magnetic resonance imaging.

Physics   Merlin891   24   cskeen80   2 months ago

Light of wavelength 450 nm produces a first-order maximum at 27 when viewed through a grating. At ...

Light of wavelength 450 nm produces a first-order maximum at 27 when viewed through a grating. At ...

Light of wavelength 450 nm produces a first-order maximum at 27° when viewed through a grating. At what angle would a first-order maximum occur for a wavelength of 600 nm viewed through this grating?

▸ 54°

▸ 40°

▸ 36°

▸ 37°

▸ 14°

Physics   SirJohnny   21   sillysquirrel   2 months ago

Light is shone through an adjustable-width slit in an otherwise opaque barrier, and a diffraction ...

Light is shone through an adjustable-width slit in an otherwise opaque barrier, and a diffraction ...

Light is shone through an adjustable-width slit in an otherwise opaque barrier, and a diffraction pattern is observed. If the slit is decreased to half its original size, by what factor does the width of the central diffraction maximum change?

▸ Decreases by a factor of four

▸ Doubles

▸ Halves

▸ Increases four times

Physics   MrsSmitty   21   traumajeff   2 months ago

Light from a HeNe laser (632.8 nm wavelength) is directed upon a straightened strand of human hair, ...

Light from a HeNe laser (632.8 nm wavelength) is directed upon a straightened strand of human hair, ...

[html]Light from a HeNe laser (632.8 nm wavelength) is directed upon a straightened strand of human hair, 7.5 m from the wall. By examining the diffraction pattern produced on the wall, the diameter of the hair can be determined (the diffraction pattern thus produced has minima in the same locations as if the hair were a slit of the same width in an otherwise opaque barrier). If

Physics   daogrady   16   moyo966   2 months ago