Answer: 68.4 s
Explanation:
The plot points seem to indicate a 5 m/s increase in velocity in the 6 seconds between 2 and 8 second marks. This makes the acceleration
a = 5 / 6 m/s/s
At time zero, the velocity is 13 m/s, so we need to increase by
70 - 13 = 57 m/s
t = v/a = 57 / (5/6) = 68.4 s
No spacecraft has been built yet that was able to absorb harmful
radiations in space, change weather conditions on Earth, or destroy
meteors and comets which might strike Earth.
We should continue to send robotic spacecrafts into space
because they help discard some myths about objects in space.
In other words, they help us learn things that we never knew before.
Answer:
The surface must be a good absorber of light. Spectra of the planets proved that methane in the atmospheres of these planets is what absorbs red light.
Explanation:
The different types of radiation are defined by the the amount of energy found in the photons. X-Ray photons will have greater frequency than microwaves but microwaves will have greater wavelength.
There are seven regions in the electromagnetic spectrum which in order of lowest to highest frequency are: Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays. Wavelength is inversely proportional to frequency, therefore radio waves have the longest wavelength and gamma rays have the shortest. that is why X-Ray machine photons have greater frequency and shorter wavelength while microwave photons have lower frequency but higher wavelength.
Learn more about Wavelength here-
brainly.com/question/12924624
#SPJ4
because of gravitional pull