1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
miskamm [114]
3 years ago
12

Jim stands at the front of a space ship at 90% of the speed of light and fires a laser gun forward. Jim’s ship is moving past St

eve who sees the ship moving at 90% of the speed of light away from him. From Steve’s point of view the laser light leaving the gun moves at? A. 190% speed of light B. 10% C. 90% D. 100%
Physics
1 answer:
klasskru [66]3 years ago
3 0
It's 100% (D).  The speed of light is the same, in all frames of reference,
and no matter whether the source or the observer is moving, or how fast,
or in what direction, or for how long, or what day it is.
You might be interested in
State three differences between solid friction and viscosity​
Mrrafil [7]
Difference between solid friction and viscosity is as follows: Viscosity is proportional to the surface area whereas solid friction is independent of area of solid surfaces in contact. Viscous force on the body depends upon its velocity in the viscous media. But, friction does not depend on the velocity of the body.
8 0
2 years ago
Please the organisms in the order of transmission for Lyme disease. Begin with the organism that originally carries the bacteria
Aleonysh [2.5K]
White footed mouse, than human.
5 0
2 years ago
When refrigeration can’t work how does the molecules work to keep it cool
Simora [160]
The compressor constricts the refrigerant vapor, raising its pressure, and pushes it into the coils on the outside of the refrigerator. 2. When the hot gas in the coils meets the cooler air temperature of the kitchen, it becomes a liquid. ... The refrigerant absorbs the heat inside the fridge, cooling down the air.
7 0
2 years ago
You paddle a conoe with a force of 325 N. You and the canoe have a combined mass of 250 kg. What is the acceleration of the cano
Brums [2.3K]

f = ma

Rearranging it, we get;

a =  \frac{f}{m}
Where a is the acceleration, f is the force, and m is the mass

a =  \frac{325}{250}
a = 1.3 \frac{m}{ {s}^{2} }

7 0
3 years ago
(a) How many fringes appear between the first diffraction-envelope minima to either side of the central maximum in a double-slit
Ainat [17]

Answer:

a

The number of fringe is  z  = 3 fringes

b

The  ratio is I = 0.2545I_o

Explanation:

a

 From the question we are told that

        The wavelength is  \lambda = 600 nm

        The distance between the slit is  d = 0.117mm = 0.117 *10^{-3} m

        The width of the slit is  a = 35.7 \mu m = 35.7 *10^{-6}m

let  z be the number of fringes that appear between the first diffraction-envelope minima to either side of the central maximum in a double-slit pattern is  and this mathematically represented as

             z = \frac{d}{a}

Substituting values

             z = \frac{0.117*10^{-3}}{35.7 *10^{-6}}  

             z  = 3 fringes

b

   From the question  we are told that the order  of the bright fringe is  n = 3

   Generally the intensity of  a pattern  is mathematically represented as

                 I = I_o cos^2 [\frac{\pi d sin \theta}{\lambda} ][\frac{sin (\pi a sin \frac{\theta}{\lambda } )}{\pi a sin \frac{\theta}{\lambda} } ]

Where I_o is the intensity  of the  central fringe

 And  Generally  sin \theta = \frac{n \lambda }{d}

               I = I_o co^2 [ \frac{\pi (\frac{n \lambda}{d} )}{\lambda} ] [\frac{\frac{sin (\pi a (\frac{n \lambda}{d} ))}{\lambda} }{\frac{\pi a (\frac{n \lambda}{d} )}{\lambda} } ]

               I = I_o cos^2 (n \pi)[\frac{\frac{sin(\pi a (\frac{n \lambda}{d} ))}{\lambda} )}{ \frac{ \pi a (\frac{n \lambda }{d} )}{\lambda} } ]

               I = I_o cos^2 (3 \pi) [\frac{sin (\frac{3 \pi }{6} )}{\frac{3 \pi}{6} } ]

                I = I_o (1)(0.2545)

                  I = 0.2545I_o

6 0
3 years ago
Other questions:
  • How much work is needed to push a 117- kg packing crate a distance of 2.75 m up an inclined plane that makes an angle of 28 o wi
    15·2 answers
  • This form of energy results from the movement of molecules. The faster the molecules move, the higher the?
    7·2 answers
  • Which circuit component usually acts as a switch or amplifier?
    10·1 answer
  • What are chemical properties
    11·2 answers
  • If Jupiter were 10 times more massive, it would generate nuclear fusion in its core and be a star instead of a planet. If Jupite
    12·2 answers
  • Consider a car engine running at constantspeed. That is, the crankshaft of the en-gine rotates at constant angular velocity whil
    6·1 answer
  • Which is the answer
    12·2 answers
  • A rectangular block measures 4.1cm by 2.8cm by 2.1cm. calculate its volume given you answer to an appropriate number of signific
    15·2 answers
  • A 2300 kg sailboat is moving west at 5.5 m/s when an eastward wind
    7·1 answer
  • Sound travels through different mediums using..
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!