Gravitational waves travel at the speed of light. Their speed, wavelength, and frequency are related as c5hxf. If we were to observe a gravitational wave from a distant cosmic event with a frequency of 10 hertz (Hz), what would be the wavelength of the gravitational wave?
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- The pilot of a space ship shines a laser pointer from the back of the ship to the front. The laser travels at the speed of light 300,000 km/s with respect to the ship, which is itself moving at 100,000 km/s. What will be the speed of the laser beam according to an observer at rest outside the ship? Express your answer in km/sThe remaining lifetime of the Sun in seconds is 1.5 x 10¹7 sec. Convert this value into years. 0000000000000000 PLS HELP!A star is 80 light years from Earth. How fast does a spacecraft have to be for the journey to last the 70 years of an astronaut's life? The answer is 0,7526c. Show a complete approach on how to get to the answer by using the necessary equations.
- A radio transmitter broadcasts at a frequency of 142kHz. What is the wavelength of the wave? ( speed of light in vac-uum: c = 3 × 10 8 m/s ) Calculate to 1 decimalTwo waves are travelling through outer space. Wave 1 has a frequency of 300 MHz and wave 2 has a frequency of 300 Hz. How does the speed of wave 1 (v1) compare to wave 2 (v2)? a) v1 = (1E-6)v2 b) v1 = (1E6)v2 c) v1 = 1/v2 d) v1 = v2The Planck time is the unique interval of time that can be built out of G, c, and h. Some physicists think that time intervals shorter than the Planck time have no meaning. Using G = 6.7 x 10-11 kg-1 m3 s-2, c = 3 x 108 m s-1, and h = 6.6 x 10-34 kg m2 s-1, calculate the Planck time, in units of 10-43 s.
- A radio transmitter broadcasts at a frequency of 127kHz. What is the wavelength of the wave? ( speed of light in vac-uum: c = 3 × 10 8 m/s ) Calculate to 1 decimalA light-year is the distance that light can travel in one year. Similarly, we can define a light-second, light-day, etc. as the distance that light can travel in other time intervals. Calculate the distance represented by each of the following: (Assume that the speed of light is 3 x 10^8m/s) 5 light-minutes 6 light-days 6 light-days, but this time answer in miles (enter just the number with no units)A star has an element in its atmosphere that normally emits a line of frequency fs = 7.5 x 10^14 vib/s. If astronomers measure the frequency of this line to be fo = 7.7 x 10^14 vib/s, then how fast are the Earth and this star traveling relative to each other? Remember that the correct equation for the speed v is given by v = [(fo^2 - fs^2) / (fo^2 + fs^2)] c Remember fo^2 means "fo squared."