18 If we develop spacecraft that can take humans to nearby solar systems at a few percent of the speed of light, how long would it be before we could conceivably populate allhabitable planets in the entire Milky Way?ABDEA few hundred thousand yearsA few hundreds of millions of yearsWe could never colonize the galaxy unless we had ships that could travel very close to the speed of light.A few million yearsA few billion years

We need to find how long it would take to colonize the entire galaxy at a certain fraction speed of…

Answered: If we develop spacecraft that can take…

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2. Suppose the boat A is moving relative to the water with a velocity of 6 m/s due east and boat B is moving with a velocity of 12 m/s due west. Assume that observers on both boats use reference frames in which the x direction points east. According to the Galilean veloc- ity transformation equations, what is the velocity of boat A relative to boat B. (Hint: Draw a picture. Be sure to define which object corresponds to which frame.)
3 Stud, Bue Onine Fasncards os docs.google.com k #2 at a glance SEM II O prmat Tools Add-ons Help Last edit was 6 minutes ago Normal text Times New. 14 + BIUA I| 3 I 4 5 6 I II 7 Model ion: 1. A 7kg object is moving with a speed of 8m/s from a height of 2 m: a. Calculate the Kinetic Energy: 2 mv .5 x 10x 12= b. Calculate the gravitational PE: c. Calculate Mechanical Energy: !!!
The mass density of our universe is measured to be about 10-29 kg/m3. If an arbitrary point is chosen as the center, how large is the radius of a spherical surface centered at the point so that the mass enclosed in the surface will become a blackhole observed by someone outside the surface? A. 4.2 trillion light years B. 420 billion light years C. 42 billion light years D. 4.2 billion light years Is the answer D? Thanks!
Part I. We will leam in this class that the distance from the Earth to the Sun is approximately 1AU = 150,000,000 kilometers. a. Convert this number to meters (1 kilometer = 10° meters) and express it using scientific notation: 150000000000 meters How else might you express this number? (Millions, billions, etc. ?) b. A car on the highway drives at 55 mph = 25 meters per second. How long would it take to drive to the Sun? (Assuming you have a car that works in outer space.) Use the equation distance = velocity x time, or time = distance / velocity. Time = distance/velocity = , seconds (don't forget to use scientific notation.) How many days?. _days How many years?. years Does the answer surprise you?
In this experiment, as a form of sheltering-at-home fantasy, we adopt a science=fiction scenario. It’s the year 2520 and you are an astronaut working for a private entity simply called The Company. The CEO of The Company is the 8th clone of Elon Musk. Elon 9 has provided you with a small interstellar spacecraft about a million times faster than anything we can conceive of today. It is your job to check out the potential habitability of a few relatively near potentially habitable planets to see if human colonies can be established there to mine materials for the latest version of the Tesla automobile. But there is a problem. Shortly before your launch, a solar-system-wide pandemic ground human economy to a standstill. So Elon 9 had to cut corners. The only device he could afford for you to measure gravity acceleration on the subject planets is a pendulum with a length of 100 cm. After landing, you will determine the gravitational acceleration at the surface of…
A 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)
6. One of the potentially confusing things about special relativity is that it shows us that the time measured between two events depends upon your inertial frame of reference. In particular, two events that appear to be simultaneous in one inertial frame may be measured to occur at different times in a different inertial frame. Even more interesting is that Event 1 might occur either before or after (or at the same time as) Event 2, depending upon your reference frame! The proper interpretation of these facts is to say that nothing in physics forces two simultaneous events in one frame to be simultaneous in any other frame. However, what about the order of events when Event 1 CAUSES Event 2? For example, let's consider two events from a game of pool: 1) A cue ball, traveling at 10 m/s, hits the eight ball (of mass equal to the cue ball). An elastic collision transfers all the linear momentum of the cue ball to the eight ball. 2) 0.1 seconds later, the eight ball sinks in a corner…
Challenges to Space Exploration a) We can round numbers to say light (and all electromagnetic radiation: radio waves, infrared, ultraviolet, etc.) travels at approximately 3x108 m/s. At its closest approach, Mars is about 0.5 au of the Earth. At this distance, how long would it take for an astronaut on Mars to communicate with Mission Control on Earth? Give your answer in minutes. Explain why Mars rovers have entire sequences for travel pre-programmed and uploaded all at once rather than being driven around in real time with a joystick. For the Earth-Moon distance in 5b, you can use 384,400 km b) The boosters that launched Apollo 11 allowed the astronauts to reach a speed of 25,000 miles per hour. At that speed, about how long did it take for the astronauts to reach the Moon? At that speed, how long would it take to reach Mars, assuming the closest approach distance given above? Give your answers in days.
C Imagine An Alternate Universe V X to kg-Google Search O A https://www-awu.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkasNW8D8A9PVVfeR1Y7GY2KST3SAA8EqmvAnKnndcHJmAcNN2IPIXIFZqUOWPsBG1EcIVILUdSD e Register | Pearso O Average Atomic Ma. 2 Convert grams Calc. Convert hertz [Hz] t. Q VidQuiz: Trans. In B. Syllabus: 1A Blake F.. abody b Answered: Decide 10 Imagine an alternate universe where the value of the Planck constant is 6.62607 × 10º J.s. In that universe, which of the following objects would require quantum mechanics to describe, tha objects would act like everyday objects, and be adequately described by classical mechanics? object quantum or classical? O classical A paper airplane with a mass of 4.4 g, 250. mm long, moving at 1.4 m/s. O quantum classical An iceberg with a mass of 1.4 x 108 kg, 120. m wide, moving at 0.61 km/h. quantum classical A raindrop with a mass of 16.0 mg, 3.7 mm wide, moving at 8.2 m/s. quantum O classical An eyelash mite with a mass of 14.9 ug, 210 um wide,…